Nov 27, 2025
Today's siren of the day is the L138 by Elektror!
You can't believe how surprised I was to find out that here in central europe are dual tone sirens! The L138 was produced by Elektror Karl W Müller during the second world war. It is very special and kinda unusual since it is a dual tone siren. We know these usually from the United States and other countries (for example the 3t22). The dual tone is created by a high tone and a low tone rotor. Both siren rotors which are more common for older sirens here. Only eleven of these are active and still exist
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