Powered Ethernet

"Infomart founded in 1993, is the Technology Division of the 80-year old Jairamdas Group. Infomart is headquartered in Bangalore, the Technological capital of India. Our family owned, professionally managed structure enables us to offer the best of both worlds to our stake holders – our clients, our investors, our team. To serve our global customers better, we follow continuous improvement process and scale to meet the increasing demands of our clientele. We have two companies to facilitate our geographical spread: Infomart (India) Pvt. Ltd., based in Bangalore, headquarters of the Infomart Group. Global delivery center for our customers. Infomart Technologies, based in the Dallas-Ft. Worth metroplex, Texas, USA, which facilitates our North American operations."

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Understanding IEEE 802.3at: The Power of Powered Ethernet (30W PoE+)

In modern network installations, the idea of supplying both data and power over the same cable has become increasingly attractive. This is exactly what powered Ethernet enables: using a single Ethernet cable to carry network traffic and electrical power to a device. One widely adopted standard in this realm is IEEE 802.3at, which significantly expands what powered Ethernet can support.

What is IEEE 802.3at and how does it relate to powered Ethernet?

The IEEE 802.3at standard (also known as “PoE+”) was ratified in 2009 and is an evolution of the earlier IEEE 802.3af standard.

 Under IEEE 802.3at, a powered Ethernet port (on the power-sourcing equipment, or PSE) can supply up to 30 watts of power, though in practice the device being powered (the powered device, or PD) is guaranteed around 25.5 watts.

 In a powered Ethernet environment, this higher power budget gives the network designer freedom to deploy more capable devices — such as more advanced IP cameras, dual-band wireless access points, and digital signage — without needing separate power outlets.

Key features of powered Ethernet under IEEE 802.3at

One of the main advantages of powered Ethernet via IEEE 802.3at is that it maintains backward compatibility with the earlier IEEE 802.3af standard. That means older powered devices can often still work with newer PSE equipment supporting the at standard.

 Another feature of this powered Ethernet standard is the use of detection and classification: the PSE will sense when a PD is connected, determine the power class of the PD, and only then enable the higher-voltage feed. This ensures safety and avoids damaging non-PoE equipment.

 Additionally, because powered Ethernet consolidates power and data onto the same cable, it simplifies installations: fewer power outlets and fewer separate power cables are needed. Installers pull one Ethernet cable rather than one for data and one for power. 

Why is the 30W (or “25.5W usable”) threshold important?

In typical powered Ethernet setups using IEEE 802.3at, a PSE may put out up to ~30 W (on the port) but the PD is assured around 25.5 W after cable losses. 

That difference accounts for voltage drop and wiring losses. Having ~25 W available at the PD enables devices with higher power demands than earlier PoE could provide (which topped out around 15.4 W under IEEE 802.3af). For example, a motorised pan-tilt-zoom (PTZ) camera or a high-performance wireless access point with multiple radios often demands more power than the original PoE standard allowed; powered Ethernet via IEEE 802.3at enables those devices.

Typical applications of powered Ethernet (IEEE 802.3at)

Because the standard allows the data cable to supply both network connectivity and power, many real-world network installations use powered Ethernet for:

IP video surveillance (especially PTZ or multi-sensor cameras)

Wireless access points in difficult-to-reach locations (rooftops, ceilings)

Digital signage and displays where a local power outlet might be inconvenient

VoIP phones with additional features or extra power draw

Small network switches or edge devices in remote locations

The power budget of about 25 W gives enough headroom for many of these devices, making powered Ethernet via IEEE 802.3at a practical solution for network-wide deployments.

Planning for powered Ethernet deployments

Even with powered Ethernet, good planning matters. First, assess the powered device’s actual power draw and ensure the PSE has adequate budget. Even though the PSE might be rated up to 30 W, only ~25.5 W is available at the PD after losses. Second, ensure your cabling is appropriate. The Ethernet cable length (max ~100 m per link) and cable quality (Cat 5e or higher for higher power and gigabit speeds) affect how much power you can reliably deliver. Third, consider whether you need to future-proof your network. If you expect devices demanding more than ~25 W, you might plan for the next standard (IEEE 802.3bt) which supports even higher power per port. Fourth, check whether all devices and switches are certified or compatible with the powered Ethernet standard you’re adopting (IEEE 802.3at), so you avoid interoperability issues.

Powered Ethernet vs prior and newer standards

Under powered Ethernet technology, the original IEEE 802.3af standard provided up to ~15.4 W at the source and only ~12.95 W at the PD. 

For many simple network devices (VoIP phones, basic cameras) that was sufficient. But as networked devices became more capable and drew more power, a higher budget was needed, hence IEEE 802.3at. On the other hand, the newer IEEE 802.3bt standard greatly increases the power budget (up to 60 W/90 W depending on type) and can use all four twisted pairs in the cable. 

If your powered Ethernet deployment might need to support high power devices (e.g., large displays, lighting, IoT actuators), then planning for or using IEEE 802.3bt might make sense.

Summary – why powered Ethernet with IEEE 802.3at makes sense

If you want the convenience of using one cable to do both data and power, and you are connecting devices that draw moderately high power (in the ~10-25 W range), then powered Ethernet via IEEE 802.3at is a strong choice. It offers a good balance between power capability and infrastructure simplicity. By reducing the number of power cables/outlets, simplifying network wiring, and supporting more advanced network devices (compared to older PoE), it supports network installations with fewer constraints. If you foresee even higher power demands, then look to newer standards. But for many current applications, powered Ethernet with IEEE 802.3at delivers solid performance and value.

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The PEM1200 series is a compact size IEEE802.3af compliant Power Over Ethernet (PoE) Powered Device (PD) extraction module delivering up to 12.95W of power in all output voltage ratings. https://www.poweredethernet.com/product-details/pem1200-series/

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PoweredEthernet & RoHS Compliance: What You Need to Know

In today’s electronics market, environmental compliance is not optional — it’s essential. PoweredEthernet, a product line from Infomart® India Private Limited, has publicly declared that its products comply with the European Union’s RoHS (Restriction of Hazardous Substances) directive. (Powered Ethernet) This article explains what RoHS is, how PoweredEthernet meets those standards, and why this matters to clients, regulators, and end users.

What Is RoHS?

RoHS stands for Restriction of Hazardous Substances. It is a European Union Directive intended to limit the use of certain hazardous materials in electrical and electronic equipment (EEE). (Environment) The goal is to reduce environmental impact and health risks by restricting how much of substances like lead, mercury, cadmium, hexavalent chromium, and certain flame retardants (PBB, PBDE) can be used in devices. (Environment) Over time, the list of restricted chemicals has been expanded (notably via Directive 2015/863). (Helukabel)

Under these rules, an electronic product must ensure that none of these restricted substances exceed specified limits (typically 0.1% by weight, except cadmium, often restricted to 0.01%). (Wikipedia) Non‑compliance can block sale in the EU market, attract fines, and damage reputation.

Infomart’s PoweredEthernet & RoHS Declaration

Infomart has issued a declaration stating that their PoweredEthernet products comply with the EU RoHS directive (specifically Directive 2015/863) as of July 22, 2023. (Powered Ethernet) According to their statement:

Their products do not contain restricted substances in quantities above permitted thresholds, except for some older models that were manufactured prior to December 2023 which are approved under exemption 7c‑1 (for lead in certain glass or ceramic components). (Powered Ethernet) The restricted substances they monitor include Cadmium, Lead, Mercury, Hexavalent Chromium (Cr VI), PBBs, PBDEs, and phthalates such as DEHP, BBP, DBP, and DIBP. (Powered Ethernet) Infomart also declares compliance with REACH (the EU’s regulation on chemical safety), stating that their products do not release substances during normal use and that their manufacturing/importing levels are low enough that REACH registration is not required. (Powered Ethernet) They assert that no PoweredEthernet product contains more than 0.1% by weight of any SVHC (Substances of Very High Concern) as listed by the European Chemicals Agency, with few exceptions (older models). (Powered Ethernet)

This transparent declaration builds trust with customers, especially those in regions (like the EU) that require strict compliance.

Real‑World Examples & Product Support

Several individual PoweredEthernet / PoE modules from Infomart that are sold via electronics distributors also carry RoHS‑compliance labels in their product datasheets. For example:

The PES4024GPC0 PoE splitter is listed as RoHS compliant in its product specification. (element14) The PES4018GPC0 module is labeled “RoHS Compliant: Yes” in its technical documentation. (element14) The PEM1212 module also mentions “RoHS Compliant: Yes”. (element14 These product-level references support Infomart’s broader compliance claim, showing that individual components align with the declared standards.

Why RoHS Compliance Matters (Especially for PoweredEthernet)

Market Access & Legal Compliance Without RoHS compliance, products may be barred from sale in the EU or require costly exemptions. For a company exporting to or operating in Europe, such compliance is non-negotiable. Environmental & Health Safety By limiting hazardous substances, RoHS helps reduce pollution, safer disposal of electronic waste, and lower health risk for workers and end users. Customer Trust & Brand Strength A declaration of compliance provides assurance to OEMs, system integrators, and buyers that PoweredEthernet solutions are safe, responsible, and certified. Competitive Differentiation In a crowded PoE / Ethernet module market, claiming RoHS compliance helps PoweredEthernet stand out as a sustainable and regulation‑ready choice.

Challenges, Caveats & Best Practices

Exemptions: Some older components might use restricted substances under approved exemptions (as Infomart acknowledges). (Powered Ethernet) Supplier Chain Risks: Compliance depends on vendors upstream. Infomart must ensure every component supplier also complies or provides proper documentation. Documentation & Audits: They must maintain a “technical file” (material declarations, lab test reports) to support claims. Updating as Laws Change: RoHS law evolves; staying current (for example with new substances, stricter limits) is essential.

Conclusion

PoweredEthernet by Infomart taking an explicit stand on RoHS compliance is a smart, necessary move. By declaring adherence to Directive 2015/863 and aligning product specs, Infomart strengthens its credibility, safeguards market access, and aligns with global sustainability standards. For clients and partners evaluating Ethernet / PoE modules, this compliance is not just a box to tick — it’s a signal of quality, responsibility, and long‑term viability.

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The PEB9300BT series of Power over Ethernet (PoE) board, offers a completely ready to use all in one board IEEE802.3bt PoE solution, offering type 4, Class 8 and output power up to 90 watts when sourced from a compatible PoE Power Sourcing Equipment (PSE). Visit Us: https://www.poweredethernet.com/product-details/peb9300-series-all-in-one-poe-boards/

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The PEB9300 Series is a cutting-edge Single Board PoE (Power over Ethernet) PD (Powered Device) System that has emerged as a game-changer in the world of networking and telecommunications. This innovative solution offers both power and data transmission over a single Ethernet cable, effectively reducing installation costs, improving reliability, and increasing the overall efficiency of the network infrastructure. Whether used in industrial settings, surveillance systems, or telecommunication networks, the PEB9300 Series has proven to be a highly reliable and cost-effective solution.

PEB9300 Series: The Future of PoE PD Systems for Efficient Power...

The PEB9300 Series is a cutting-edge Single Board PoE (Power over Ethernet) PD (Powered Device) System that has emerged as a game-changer in

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In the world of Power over Ethernet (PoE), efficiency, reliability, and size matter. The PEM3200 stands out as one of the smallest yet most

The PEM3200 is built for versatility. Its compact form factor allows it to integrate easily into space-constrained designs while maintaining full compliance with IEEE 802.3af (Type 1) and IEEE 802.3at (Type 2) standards. When paired with a qualified PSE, the module can deliver up to 25.5 W continuous and 30 W peak power—ideal for high-performance devices that demand stable and efficient DC power through the Ethernet cable.

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PEM3200: Compact Power with Full IEEE 802.3at Performance

In the world of Power over Ethernet (PoE), efficiency, reliability, and size matter. The PEM3200 stands out as one of the smallest yet most capable PoE Powered Device (PD) extraction modules available globally. Despite its compact footprint, it delivers the full power and performance demanded by modern networked devices. Designed to comply with IEEE 802.3af and IEEE 802.3at standards, the PEM3200 can deliver up to 30 watts of peak power when connected to a compatible Power Sourcing Equipment (PSE) through a standard CAT5e or higher Ethernet cable.

This small but powerful module brings high-performance PoE functionality to devices that require efficient power extraction without sacrificing valuable space on the circuit board. For developers, engineers, and product designers working with embedded systems, security cameras, wireless access points, IoT gateways, or digital signage, the PEM3200 offers a perfect mix of performance and convenience.

Compact Power Delivery for Modern Applications

The PEM3200 is built for versatility. Its compact form factor allows it to integrate easily into space-constrained designs while maintaining full compliance with IEEE 802.3af (Type 1) and IEEE 802.3at (Type 2) standards. When paired with a qualified PSE, the module can deliver up to 25.5 W continuous and 30 W peak power—ideal for high-performance devices that demand stable and efficient DC power through the Ethernet cable.

For applications like IP cameras, industrial sensors, wireless bridges, or embedded controllers, this means designers no longer need to choose between small size and full-power capability. The PEM3200’s design ensures maximum power extraction and conversion efficiency, helping reduce thermal load and overall power loss in the system.

Standards Compliance and Smart Classification

The PEM3200 supports fixed PoE Class 4 operation and performs Two-Event Physical Layer (Layer 1) classification, as defined in the IEEE 802.3at specification. This two-event classification enables connected PSEs to identify the device as a high-power PD and allocate the necessary power budget accordingly.

Beyond the physical layer, the module also includes an “AT Detect” pin that facilitates Layer 2 (data layer) classification, allowing intelligent communication between the PSE and PD for advanced power management. This flexibility makes it possible for the PEM3200 to operate seamlessly with both legacy IEEE 802.3af PSEs and modern IEEE 802.3at or 802.3bt (Type 3 and Type 4) power sources.

The result is a highly interoperable module that fits a wide range of networked environments—from older installations to cutting-edge PoE infrastructures.

Designed for Performance and Integration

What makes the PEM3200 truly valuable is how much it offers in such a small package. Its design combines a high-efficiency DC-DC conversion stage with advanced protection features, ensuring both reliability and long-term durability.

Key highlights include:

Wide input voltage range, compatible with 37–57 V DC PoE supplies

Integrated power classification circuitry for IEEE 802.3at/af compliance

Low ripple output for stable downstream electronics

Over-voltage, under-voltage, and thermal protection for safe operation

Plug-and-play design, minimizing the need for external components

Thanks to its built-in protections and compliance features, the PEM3200 can be confidently used in harsh or demanding environments such as industrial automation, outdoor network equipment, and smart infrastructure systems.

Simplifying PoE Integration

Integrating PoE into a device can often be complex, especially when balancing standards compliance, electrical safety, and mechanical constraints. The PEM3200 simplifies this process. It acts as a complete PoE PD front-end module, handling all aspects of detection, classification, and power extraction. Designers can focus on their core system electronics while relying on the PEM3200 to manage the Ethernet power interface efficiently.

By supporting both Type 1 (IEEE 802.3af) and Type 2 (IEEE 802.3at) modes, and maintaining forward compatibility with IEEE 802.3bt, it ensures flexibility for current and future designs. Whether a system requires 13 W or 30 W of power, the PEM3200 intelligently negotiates the correct power class with the connected PSE.

Applications Across Industries

The PEM3200’s combination of small size and full power delivery makes it suitable for a wide range of powered Ethernet applications, including:

IP and security cameras – where compact design and reliable power are crucial.

VoIP phones and communication terminals – enabling clear, uninterrupted operation.

Wireless access points and bridges – powering high-throughput network devices.

IoT gateways and edge computing devices – supporting smart infrastructure.

Digital signage and interactive kiosks – offering easy installation without external power.

Industrial automation equipment – providing stable PoE power in rugged environments.

Because it’s IEEE-compliant, the PEM3200 can connect seamlessly to virtually any standard PoE switch or midspan injector, making deployment simple and scalable.

Efficient Power Conversion and Reliability

Power efficiency is critical in PoE systems, not only for performance but also for thermal management. The PEM3200 features a high-efficiency conversion architecture, minimizing energy loss and heat generation. This efficiency directly translates to lower component stress, longer lifetime, and more reliable operation under continuous load.

For designers focused on sustainability and energy savings, the PEM3200’s efficiency also contributes to overall system energy reduction—a growing consideration in network and industrial applications.

Built for the Future of Powered Ethernet

As the demand for PoE-enabled devices grows, the need for compact, efficient, and standards-compliant PD modules becomes even more important. The PEM3200 embodies the next generation of PoE technology—small enough to fit into tight spaces, yet powerful enough to handle the full 30 W power class defined by IEEE 802.3at.

Its support for both Layer 1 and Layer 2 classification, along with compatibility across IEEE 802.3af, 802.3at, and 802.3bt standards, makes it a future-proof choice for product developers building scalable, power-over-Ethernet devices.

With the PEM3200, PoweredEthernet continues to deliver solutions that simplify network power integration, enhance device reliability, and support the ever-expanding ecosystem of PoE-powered applications.

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PEM3200 Series: Compact Size, Full Power IEEE802.3at Compliant PoE...

The demand for reliable, high-performance networking solutions has grown significantly with the rise of intelligent devices, smart infrastru

The demand for reliable, high-performance networking solutions has grown significantly with the rise of intelligent devices, smart infrastructure, and IoT applications. Power over Ethernet (PoE) has emerged as a game-changer by simplifying network deployments, reducing installation costs, and enabling flexible powering options for devices like IP cameras, wireless access points, VoIP phones, and IoT sensors. Among the various solutions available today, the PEM3200 series stands out as a compact size, full-power IEEE802.3at compliant PoE device designed to meet modern networking needs with unmatched efficiency and versatility.

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PEM3200 Series: Compact Size, Full Power IEEE802.3at Compliant PoE Solution

The demand for reliable, high-performance networking solutions has grown significantly with the rise of intelligent devices, smart infrastructure, and IoT applications. Power over Ethernet (PoE) has emerged as a game-changer by simplifying network deployments, reducing installation costs, and enabling flexible powering options for devices like IP cameras, wireless access points, VoIP phones, and IoT sensors. Among the various solutions available today, the PEM3200 series stands out as a compact size, full-power IEEE802.3at compliant PoE device designed to meet modern networking needs with unmatched efficiency and versatility.

What is the PEM3200 Series?

The PEM3200 series is a next-generation Power over Ethernet solution engineered to deliver full IEEE802.3at-compliant power within a compact form factor. Supporting PoE+ (IEEE802.3at), the series provides up to 30 watts of power per port, which makes it capable of powering more demanding devices than earlier IEEE802.3af solutions that were limited to 15.4 watts. Despite its small footprint, the PEM3200 series ensures consistent and reliable power delivery, making it an ideal solution for space-constrained installations.

By combining power and data transmission over a single Ethernet cable, the series reduces cabling complexity, speeds up deployment, and minimizes costs for businesses and organizations seeking efficient networking infrastructure.

Compact Size, Big Performance

One of the key highlights of the PEM3200 series is its compact design. Many PoE injectors and midspans on the market require large rack space or complex installation, which is not always feasible in smaller environments. The PEM3200 series solves this issue by offering a space-saving solution that can easily be deployed in offices, retail stores, security system setups, or industrial sites where space is limited but performance requirements are high.

This compact build does not compromise power output or efficiency. The device is engineered with advanced power management technology that ensures high efficiency, low heat dissipation, and reliable 24/7 operation.

IEEE802.3at Compliance: Why It Matters

Compliance with the IEEE802.3at standard (PoE+) is critical in today’s networking landscape. It ensures interoperability across a wide range of PoE-powered devices (PDs), giving businesses the flexibility to mix and match devices from different manufacturers without compatibility concerns.

IEEE802.3at support means the PEM3200 series can provide:

Up to 30W per port to power demanding devices like PTZ IP cameras, high-performance wireless access points, and multi-line VoIP phones.    

Backward compatibility with IEEE802.3af devices, ensuring investment protection for older powered devices.    

Intelligent power detection that automatically identifies if a connected device is PoE-capable, preventing accidental damage to non-PoE devices.    

This ensures safe, reliable, and standards-based deployment in any environment.

Key Features and Benefits

Compact Design – Saves valuable space in cabinets, desks, or wall-mounted setups.    

Full-Power Delivery – Provides consistent IEEE802.3at (30W) performance without compromise.    

Plug-and-Play Simplicity – Easy deployment with no need for additional electrical wiring.    

Enhanced Reliability – Built with industrial-grade components for continuous operation.    

Cost Efficiency – Reduces the need for extra power outlets and electrical installation costs.    

Scalability – Easily integrates into growing networks, supporting both new and legacy devices.    

Applications of the PEM3200 Series

The versatility of the PEM3200 series makes it suitable for a broad range of applications:

IP Surveillance Systems: Powering high-resolution and PTZ cameras without separate electrical wiring.    

Wireless Networking: Supporting enterprise-grade access points in offices, schools, and public venues.    

VoIP Communications: Providing seamless power and connectivity to advanced IP phones.    

IoT Deployments: Supporting edge devices like sensors and gateways in smart building and smart city projects.    

Retail and Hospitality: Enabling kiosks, interactive displays, and access points in customer-centric environments.    

Performance and Reliability

In addition to its compact design and compliance with international PoE standards, the PEM3200 series incorporates advanced safety and performance features. Overload protection, short-circuit safeguards, and temperature management ensure maximum uptime and reliability. This makes the series not only a convenient option but also a robust solution for mission-critical applications.

With a focus on energy efficiency, the PEM3200 series minimizes power loss during transmission and reduces operational costs over time. Businesses deploying these devices can rely on long-term performance while maintaining lower total cost of ownership (TCO).

Conclusion

The PEM3200 series redefines what a compact PoE solution can deliver. By combining full IEEE802.3at compliance, compact design, high efficiency, and versatile applications, it meets the needs of modern businesses and organizations seeking smarter networking infrastructure. Whether it’s powering next-generation access points in a corporate office, high-resolution cameras in a surveillance system, or IoT devices in a smart city, the PEM3200 series provides the performance, reliability, and flexibility required in today’s connected world.

As networks continue to evolve toward greater integration of smart devices and high-performance endpoints, solutions like the PEM3200 series will remain at the heart of efficient, cost-effective, and future-ready deployments.

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Unlocking the Potential of PoE: A Deep Dive into the PEM1200 Series

In today’s connected world, powering devices efficiently and reliably is just as important as data connectivity itself. From smart lighting and IP cameras to wireless access points and industrial sensors, modern networks are expected to deliver both power and data without compromise. That’s where Power over Ethernet (PoE) technology shines.

Among the growing list of PoE solutions, the PEM1200 series stands out as a compact, cost-effective, and high-performance powered device (PD) extraction module. Designed to comply with the IEEE802.3af standard, it provides up to 12.95 watts of power across multiple output voltage options. This flexibility makes it an ideal choice for system designers looking to streamline power and connectivity in a wide range of applications.

In this article, we’ll take a closer look at the PEM1200 series: its features, benefits, and where it fits in today’s PoE-enabled world.

What is the PEM1200 Series?

The PEM1200 series is a family of PoE PD extraction modules designed to convert the power delivered over standard Ethernet cables into stable DC outputs. These modules are plug-and-play ready, compliant with IEEE802.3af, and capable of powering devices with up to 12.95W of power.

Each model within the series supports different output voltage ratings, including 3.3V, 5V, 12V, and 24V, giving designers flexibility to match their system requirements. Whether you’re developing a low-power sensor node or a higher-demand device like a VoIP phone, there’s a PEM1200 module suited to the job.

Key Features

The PEM1200 series is built with versatility and reliability in mind. Here are its standout features:

Low-Cost IEEE802.3af PoE PD Module

Fully compliant with the IEEE802.3af standard.

Supports up to 12.95W, the maximum available under IEEE802.3af.

Programmable PoE Class 0–3

Gives flexibility in negotiating power requirements with the Power Sourcing Equipment (PSE).

Classes 0 through 3 cover power levels up to 12.95W, ensuring compatibility with a wide range of devices.

High-Efficiency, Isolated DC-DC Converter

Delivers stable and isolated DC output.

Provides 1500V isolation, which is crucial for protecting sensitive circuitry in noisy environments.

Frequency Dithering (AFD Models)

Minimizes electromagnetic interference (EMI).

Improves compliance with EMI regulations and boosts reliability in sensitive applications.

Compact Size

Space-saving design simplifies integration into small enclosures and constrained layouts.

Perfect for embedded systems, IoT devices, and other space-sensitive projects.

Why the PEM1200 Series Matters

The PEM1200 series addresses several challenges system designers face when integrating PoE:

Simplification of Power Delivery: By using standard Ethernet cables to transmit both power and data, designers eliminate the need for separate power lines, reducing clutter and cost.

Flexibility in Output: Multiple output voltage options make the series adaptable to different system requirements.

Isolation for Safety: The built-in DC-DC converter with 1500V isolation ensures safe operation in industrial or mission-critical environments.

EMI Management: Frequency dithering in AFD models provides an edge in compliance and system stability.

Typical Applications

Thanks to its combination of performance and affordability, the PEM1200 series can be found in a wide range of applications:

IP Security Cameras

Compact and efficient, the PEM1200 series makes it easier to deploy cameras in remote or outdoor locations without dedicated power wiring.

Wireless Access Points (WAPs)

Supports the growing demand for reliable connectivity in offices, schools, and public venues.

Eliminates the hassle of running power cables to ceiling-mounted or hard-to-reach installations.

VoIP Phones

Delivers consistent power to phones in enterprise environments, reducing the need for additional wall adapters.

IoT Devices and Smart Sensors

Compact size is perfect for smart building systems, industrial monitoring devices, and edge computing applications.

LED Lighting Systems

Enables the deployment of smart, Ethernet-controlled lighting with centralized management.

Industrial and Embedded Systems

Its isolated DC output provides an extra layer of safety in rugged or noisy environments.

Advantages Over Alternatives

The PEM1200 series competes with other PoE PD modules, but several factors set it apart:

Cost-Effectiveness: Offers a lower-cost alternative without sacrificing IEEE802.3af compliance.

Output Versatility: Available in multiple voltage models, making it easy to match the module to system needs.

Compact Footprint: Easier to integrate into products where space is at a premium.

Programmable Classes: Adds design flexibility for different power profiles.

Design Considerations

When integrating the PEM1200 series into a design, engineers should keep a few factors in mind:

Thermal Management: While highly efficient, proper thermal design ensures reliable operation under load.

Output Voltage Selection: Choosing the right module (3.3V, 5V, 12V, or 24V) avoids unnecessary conversion stages downstream.

Compliance Testing: The frequency dithering feature helps with EMI, but final system-level testing is still critical.

System Power Budgeting: Designers must ensure that the device’s total consumption stays within the 12.95W IEEE802.3af limit.

Looking Ahead: The Role of PoE

The growth of smart cities, IoT, and edge computing is driving adoption of PoE technology. While IEEE802.3af modules like the PEM1200 series provide up to 12.95W, newer standards like IEEE802.3at (PoE+) and IEEE802.3bt (PoE++/4PPoE) allow for even higher power delivery.

That said, the PEM1200 series remains highly relevant. For many applications, 12.95W is more than enough, and the smaller footprint, lower cost, and proven reliability make it a smart choice. It strikes the balance between capability and practicality, particularly for applications where space and efficiency are top priorities.

Conclusion

The PEM1200 series delivers exactly what designers need in a PoE PD extraction module: compact size, compliance, isolation, efficiency, and affordability. With output options from 3.3V to 24V and programmable PoE classes, it adapts easily to a wide range of devices, from smart lighting and cameras to industrial sensors.

As the demand for PoE-enabled devices continues to expand, modules like the PEM1200 series will play a critical role in enabling smarter, more connected systems—without adding unnecessary cost or complexity.

For engineers, integrators, and product designers, the PEM1200 series is more than just a module—it’s a reliable foundation for building the next generation of connected devices.

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Power over Ethernet (PoE) Standard IEEE 802.3af: A Comprehensive Overview

Power over Ethernet (PoE) technology has become an essential innovation in networking, providing both data and power to devices through a single Ethernet cable. This simplifies installation, reduces clutter, and lowers the cost of infrastructure. Among the various PoE standards, IEEE 802.3af is one of the foundational specifications that made PoE widely accessible and practical for businesses and residential setups alike.

In this blog, we will dive deep into the IEEE 802.3af standard, exploring its importance, key features, use cases, and how it compares to other PoE standards.

What is IEEE 802.3af?

IEEE 802.3af is the official designation for the original Power over Ethernet standard, ratified in 2003. The standard provides a way to deliver both power and data over Cat5 or higher Ethernet cables. This innovation allowed devices like IP phones, wireless access points, security cameras, and other networked devices to be powered via the same cable that transmitted data.

Before PoE, power cables were necessary in addition to Ethernet cables, making installations more complicated and expensive. With the introduction of IEEE 802.3af, this complexity was greatly reduced, and the technology became an industry standard for low-power devices.

Key Features of IEEE 802.3af

Power Delivery: IEEE 802.3af can deliver up to 15.4 watts of DC power over the Ethernet cable to powered devices (PDs). The power is provided at a nominal voltage of 48V, which is sufficient for many common low-power devices such as VoIP phones and security cameras.

Backward Compatibility: IEEE 802.3af is fully backward compatible with traditional Ethernet devices that do not require power. In other words, if a non-PoE device is connected to a PoE-enabled switch or injector, it will still function for data transmission without receiving power, ensuring that the network can handle both types of devices without issues.

Two Main Components:

Power Sourcing Equipment (PSE): The device providing power, typically a PoE switch or PoE injector.

Powered Device (PD): The device receiving the power, such as an IP camera, VoIP phone, or Wi-Fi access point.

Ethernet Cable Utilization: The standard uses the existing Ethernet cabling infrastructure, including Cat5, Cat5e, or higher cables. This means that organizations can leverage their existing wiring to deploy PoE-enabled devices, significantly reducing the cost of new installations.

Safety Features: IEEE 802.3af includes built-in mechanisms to ensure safety, such as overcurrent protection, power fault detection, and automatic power negotiation. This prevents damage to devices and ensures that power is only delivered when the proper PoE-compatible device is connected.

Distance and Power Loss: The maximum recommended distance for delivering power and data over Ethernet using IEEE 802.3af is 100 meters (328 feet). However, the voltage drop and power loss increase as the distance from the PSE to the PD increases. In longer cable runs, power may be less than the specified 15.4 watts, so careful planning of cable runs is important for ensuring reliability.

How IEEE 802.3af Works

PoE works by delivering power over the unused pairs in an Ethernet cable, which typically carries data. Ethernet cables consist of four twisted pairs of wires (eight total). In the case of IEEE 802.3af, power is injected onto the pairs that are not used for data transmission.

There are two types of power delivery methods:

Endspan: The PSE (typically a PoE switch) delivers power at the source, using the same ports that are used for data. These are called "Endspan" ports.

Midspan: A PoE injector is inserted between the Ethernet switch and the powered device, delivering power to the device. This is useful when an existing non-PoE switch needs to be upgraded to support PoE.

When a powered device is connected, the PSE conducts a negotiation to determine whether the device is PoE-compatible and what power level it needs. If the negotiation is successful, the PSE begins sending power along with data.

Applications of IEEE 802.3af

PoE has revolutionized the way many industries deploy networked devices. Some of the most common applications include:

IP Phones: VoIP (Voice over Internet Protocol) phones are one of the most well-known PoE-powered devices. With IEEE 802.3af, these phones can receive both power and data through a single Ethernet cable, reducing the need for extra power adapters.

Wireless Access Points (WAPs): Wi-Fi access points are often installed in locations where electrical outlets may be scarce. With PoE, WAPs can be powered by the same cable that provides network connectivity, simplifying the setup process.

Security Cameras: IP cameras used for surveillance can benefit greatly from PoE technology. By eliminating the need for separate power cables, IEEE 802.3af makes it easier to install cameras in areas where power outlets are not readily available.

Networked Devices in Remote Locations: Devices like temperature sensors, point-of-sale terminals, and other networked devices that are located in hard-to-reach places benefit from PoE because they don’t require a nearby power source, making installations easier and cheaper.

Smart Building Systems: PoE is also used in smart building systems to power devices like door controllers, sensors, and digital signage, allowing for easier integration and more flexible setups.

IEEE 802.3af vs. Other PoE Standards

While IEEE 802.3af was groundbreaking in its ability to deliver power over Ethernet cables, it is not the only PoE standard. Let’s compare it with other PoE standards.

IEEE 802.3at (PoE+)

Introduced in 2009, IEEE 802.3at, also known as PoE+, enhances the original PoE standard by providing up to 25.5 watts of power to devices. This increase in power supports more power-hungry devices such as pan-tilt-zoom cameras, larger wireless access points, and other devices requiring more energy.

IEEE 802.3bt (PoE++)

IEEE 802.3bt, or PoE++ (ratified in 2018), is the latest PoE standard. It provides two power levels: Type 3 (up to 60 watts) and Type 4 (up to 100 watts). This is suitable for even more demanding devices, including high-end video conferencing systems, LED lighting, and even laptops. PoE++ is becoming the standard for modern infrastructure where higher power demands are necessary.

Benefits of IEEE 802.3af

Reduced Infrastructure Costs: Since PoE delivers power and data over a single cable, there’s no need to install separate power lines or outlets, which can save both time and money during installation.

Simplified Installation: PoE enables easier and faster deployment of networked devices, especially in hard-to-reach areas where electrical outlets may not be available.

Centralized Power Management: PoE allows administrators to manage power centrally, making it easier to monitor and control devices in the network. Power failures can be quickly identified and managed from a central location, and devices can be remotely rebooted when necessary.

Scalability: PoE simplifies the scaling of networked devices. As businesses grow, adding new devices can be done quickly and cost-effectively, without the need for additional electrical infrastructure.

Conclusion

The IEEE 802.3af standard revolutionized the way networked devices are powered, offering convenience, flexibility, and cost savings. While newer standards like IEEE 802.3at and IEEE 802.3bt offer higher power outputs, IEEE 802.3af remains relevant in many applications, powering a wide range of devices in homes and businesses.

As businesses continue to deploy more IoT devices and smart technologies, PoE will undoubtedly remain a critical part of the networking landscape, and understanding the various standards and their capabilities will help organizations make informed decisions for their infrastructure needs.

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Power Over Ethernet (PoE) Switches: The Backbone of Modern Smart Infrastructure

In today’s rapidly evolving technological landscape, the integration of power and data transmission through a single network cable has revolutionized the way devices are powered and connected. Power Over Ethernet (PoE) technology plays a pivotal role in powering smart infrastructure, ensuring efficiency, convenience, and scalability in various industries. A PoE switch, in particular, serves as the backbone of modern networks by facilitating the seamless flow of both data and power to devices, such as IP cameras, VoIP phones, wireless access points, and more.

What is Power Over Ethernet (PoE)?

Power Over Ethernet (PoE) is a technology that enables Ethernet cables to deliver both data and electrical power to networked devices. Traditional Ethernet cables were used solely for transmitting data, but with PoE, the same cable can also supply power, simplifying installations and reducing the need for additional power outlets.

This technology has seen a significant adoption in commercial, industrial, and residential environments, particularly with the increasing use of Internet of Things (IoT) devices, security systems, and wireless communication devices. The introduction of PoE PD (Powered Device) Modules has made it even easier to integrate PoE technology into network setups, providing flexibility and compatibility with various devices.

The Role of PoE Switches in Smart Infrastructure

A PoE switch is a network switch that can supply power to PoE-enabled devices over standard Ethernet cables. It ensures that devices such as IP cameras, access points, VoIP phones, and other low-power devices receive the necessary power and data connectivity, all through a single cable.

1. Simplified Infrastructure

Traditionally, devices like IP cameras, phones, and access points would require a separate power supply, adding complexity to network installations. PoE eliminates this need, offering a cleaner, more efficient solution. The PoE PD module allows devices to receive power from the Ethernet cable without requiring a dedicated power line, reducing installation time and simplifying the overall network design.

2. Cost Savings

PoE switches help reduce the cost of running separate power lines for each device. Instead of needing additional electrical outlets or power adapters for every device, you only need one Ethernet cable that serves both purposes. This not only cuts down on the cost of installation but also makes maintenance more straightforward, as network administrators can troubleshoot both data and power issues from a centralized location.

3. Increased Flexibility

In a traditional setup, the location of devices is often constrained by the availability of power outlets. With PoE switches, devices can be placed anywhere within the range of an Ethernet cable, providing greater flexibility in network design. This is particularly beneficial for devices in hard-to-reach places, such as outdoor surveillance cameras or temporary installations.

4. Centralized Power Management

PoE switches centralize power management, allowing IT administrators to monitor and control power distribution across the network. For example, if there is an issue with a device, the administrator can remotely shut down the power to that device or reset it, without needing to physically access the device. This is a significant advantage for maintaining large networks, such as in corporate offices or smart buildings.

Key Features of PoE Switches

Modern PoE switches offer several key features that make them essential for building smart infrastructure:

1. High Power Delivery

The primary function of a PoE switch is to deliver power to connected devices. The IEEE 802.3af standard provides up to 15.4 watts of power per port, while the IEEE 802.3at (PoE+) standard increases that to 25.5 watts per port. For higher power requirements, the IEEE 802.3bt (PoE++ or 4PPoE) standard can provide up to 60 watts per port, supporting devices such as high-definition PTZ cameras or video conferencing systems.

2. Scalability

PoE switches come in various sizes, from small models with a few ports to larger models with 48 or more ports. This scalability makes PoE switches ideal for businesses of all sizes. Whether you're building a small office network or deploying a large-scale smart building infrastructure, PoE switches can easily be scaled up as needed.

3. Data and Power Over the Same Cable

One of the most significant advantages of PoE switches is the ability to transmit both power and data through a single Ethernet cable. This eliminates the need for additional electrical wiring and reduces the overall complexity of the network setup. It is particularly beneficial for devices like wireless access points, which require both power and data for optimal performance.

4. Reliability and Redundancy

PoE switches often come with features like dual power supplies, redundant connections, and failover protection, ensuring the reliability of the network. This is crucial for mission-critical applications, such as security systems and surveillance cameras, where continuous power and connectivity are necessary.

5. Managed and Unmanaged PoE Switches

PoE switches can be either managed or unmanaged. Managed PoE switches offer more advanced features, such as network monitoring, security settings, and traffic management, while unmanaged PoE switches provide plug-and-play functionality, ideal for smaller or less complex networks.

PoE PD Modules: Enhancing Flexibility

PoE PD (Powered Device) Modules are essential components that enable non-PoE devices to connect to a PoE-enabled network. These modules act as adapters, converting standard Ethernet ports into PoE-capable ports, allowing devices that do not natively support PoE to receive power and data over a single Ethernet cable.

PoE PD modules are particularly useful for legacy devices or those without built-in PoE support. By using these modules, organizations can take advantage of the benefits of PoE without needing to replace their existing devices. This makes it easier to integrate new PoE-powered devices into existing networks, thus reducing upgrade costs and improving overall system efficiency.

Benefits of PoE in Modern Smart Infrastructure

The adoption of PoE technology has far-reaching benefits for modern infrastructure, particularly in smart buildings, campuses, and cities. Here are some of the key advantages:

1. Support for Smart Devices

PoE enables seamless integration of smart devices like IoT sensors, smart lighting, and automated control systems. These devices rely on both data and power, and PoE provides a unified solution that simplifies connectivity and power management.

2. Enhanced Security

In security systems, such as IP cameras and surveillance equipment, PoE ensures that devices receive uninterrupted power and data connectivity. The centralized management of PoE switches also makes it easier to monitor and maintain these devices, ensuring that they are always operational.

3. Reduced Downtime

With PoE, network downtime is minimized. If a device encounters a power or data issue, it can often be resolved remotely, avoiding the need for on-site repairs or adjustments. This is particularly important for systems where continuous uptime is critical, such as security systems and communication networks.

4. Future-Proofing

PoE switches and devices are designed to support future technological advancements, making them a future-proof solution for smart infrastructure. As the demand for high-performance devices grows, PoE technology will continue to evolve, ensuring that networks remain efficient and scalable.

Conclusion: The Future of Power and Connectivity

PoE switches have become an integral part of modern network infrastructures, enabling seamless integration of power and data delivery over a single Ethernet cable. With the advent of PoE PD modules, the flexibility of PoE systems has expanded, allowing non-PoE devices to take advantage of this technology. PoE not only simplifies installations and reduces costs but also enhances the scalability, reliability, and security of modern smart infrastructure. As the world moves toward more connected and intelligent environments, PoE technology will undoubtedly continue to play a critical role in powering the future of connectivity.

By choosing PoE switches and Powered Ethernet solutions, businesses and organizations can build efficient, reliable, and future-ready networks that are capable of supporting the ever-growing demands of the digital age.

[poemodules]

PEM9300 Series: Revolutionizing Connectivity with Power over Ethernet (PoE) for Seamless Data and Power Integration Visit us: https://www.poweredethernet.com/product-details/pem9300-series/

[poemodules]

Unlocking the Potential of Power Over Ethernet: The Future of 1200W Powered Devices

What is Power Over Ethernet (PoE)?

Brief overview of PoE technology, which allows both power and data to be transmitted over a single Ethernet cable.

Benefits of PoE, including simplified installations, reduced cabling, and flexibility in device placement.

What is a PoE Powered Device?

Definition of a Power over Ethernet powered device.

Examples: IP cameras, VoIP phones, wireless access points, etc.

How PoE-enabled devices work by receiving both power and data through the same Ethernet cable.

Understanding 1200W PoE Devices:

What Does 1200W Mean in PoE?

Explanation of PoE power classes (e.g., IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt).

How a 1200W powered device differs from other PoE-powered devices in terms of capabilities and power consumption.

Common Use Cases for 1200W PoE Devices:

High-powered devices like PTZ cameras, high-performance wireless access points, and network switches.

The role of high-power PoE in large-scale enterprise environments.

Why Choose 1200W PoE Devices?

Benefits of High-Powered PoE:

Simplified infrastructure with fewer cables and power adapters.

Reduced need for separate power sources.

Increased power delivery for devices requiring more wattage.

Improved scalability for growing networks.

Applications in Enterprise and Industrial Settings:

Suitable for large office networks, data centers, or industrial IoT (Internet of Things) systems.

Reducing installation complexity in large environments.

The Role of Ethernet in High-Powered PoE Devices:

How Ethernet is integral to supporting 1200W PoE devices and ensuring reliable, high-speed data transmission alongside power.

The impact of Ethernet technology in enabling a higher power threshold (e.g., Cat5e vs. Cat6 cables).

Challenges and Considerations When Using 1200W PoE Devices:

Compatibility Issues:

Ensuring your network supports 1200W PoE (using compatible PoE switches and injectors).

The importance of verifying power budgets in your PoE switch.

Heat Dissipation and Power Management:

Managing heat output and ensuring devices have adequate cooling for optimal performance.

Conclusion:

Future of PoE Technology:

The growing trend toward higher-powered PoE devices as businesses demand more robust and scalable solutions.

A look at how PoE technology continues to evolve and its importance in powering the devices of tomorrow.

[poemodules]

The PEM1200 series of PoE modules are designed to extract power from CAT5e or higher Ethernet cable, conforming to the IEEE 802.3af Power over Ethernet (PoE) standard. The PEM1200 series is identical to the PEM1300 series, except the PEM1200 series do not have on-board bridge rectifier diodes. Visit Us: https://www.poweredethernet.com/product-details/pem1200-series/

[poemodules]

Understanding Power Over Ethernet (PoE) Modules: A Comprehensive Guide

Power Over Ethernet (PoE) technology has revolutionized the way network devices are powered, allowing both data and electrical power to be transmitted over a single Ethernet cable. This innovation simplifies installations and reduces the need for additional power sources. In this guide, we will delve into the various IEEE 802.3 standards—namely 802.3af, 802.3at, and 802.3bt—and explore their applications, benefits, and the role of PoE modules in modern networking.

What is PoE?

PoE enables Ethernet cables to deliver both data and electrical power to devices, eliminating the need for separate power supplies. This is achieved through the IEEE 802.3 standards, which define the specifications for delivering power over Ethernet cables.

IEEE 802.3 Standards Overview

IEEE 802.3af (PoE): Introduced in 2003, this standard provides up to 15.4 watts of DC power over Cat5 cables. It's suitable for devices like IP phones and wireless access points.

IEEE 802.3at (PoE+): Released in 2009, PoE+ increases the power delivery to 25.5 watts, accommodating more power-hungry devices such as PTZ cameras and video conferencing equipment.

IEEE 802.3bt (PoE++): The latest standard, PoE++ offers up to 60 watts (Type 3) and 100 watts (Type 4), supporting high-power devices like digital signage and high-performance access points.

PoE Modules: Key Components in PoE Systems

PoE modules are integral in extracting power from Ethernet cables and delivering it to powered devices (PDs). These modules comply with the IEEE 802.3 standards and are categorized based on the power they deliver:

IEEE 802.3af Modules: Provide up to 15.4W of power, suitable for low-power devices.

IEEE 802.3at Modules: Deliver up to 25.5W, supporting medium-power devices.

IEEE 802.3bt Modules: Offer up to 60W or 100W, ideal for high-power devices.

Applications of PoE Modules

PoE modules are used in various applications, including:

IP Cameras: Simplifies installation by eliminating the need for separate power cables.

Wireless Access Points: Provides both power and data connectivity over a single cable.

VoIP Phones: Powers the device while transmitting voice data.

Access Control Systems: Ensures continuous operation without the need for additional power sources.

Digital Signage: Supports high-power displays and monitors.

Benefits of Using PoE Modules

Simplified Installation: Reduces the need for separate power lines, streamlining the setup process.

Cost-Effective: Lowers installation costs by minimizing the need for additional electrical infrastructure.

Flexibility: Allows devices to be placed in locations without nearby power outlets.

Scalability: Facilitates easy expansion of network infrastructure.

Choosing the Right PoE Module

Selecting the appropriate PoE module depends on the power requirements of the device and the existing network infrastructure. Consider the following factors:

Power Requirements: Ensure the module can supply sufficient power for the device.

Compatibility: Verify that the module complies with the necessary IEEE 802.3 standard.

Environmental Conditions: Choose modules with appropriate temperature ratings and protection features.

Conclusion

PoE technology, through its various IEEE 802.3 standards, has significantly enhanced the efficiency and flexibility of network installations. By understanding the differences between 802.3af, 802.3at, and 802.3bt, and selecting the appropriate PoE modules, organizations can optimize their network infrastructure to meet the growing demands of modern devices.

For more information on PoE modules and to explore our range of products, visit Powered Ethernet.

[poemodules]

The module delivers up to 12.95 watts of power when sourced from an IEEE 802.3af compliant Power Sourcing Equipment (PSE) using CAT5e or higher Ethernet cable. The module can deliver a full load start-up at input voltages as low as 36 volts. https://www.poweredethernet.com/product-details/pem1400-series/