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A Plena end-of-line board is a PCB designed to detect the 20 kHz pilot tone generated by a supervised public address or voice alarm system. It activates a voltage free switch in the presence of a 20 kHz signal (pilot tone) above 5 V, as well as an LED for easy visual confirmation of operation.
Feature
Model
PLE‑1SCS Plena Easy Line Heavy Duty Call Station
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PLM-8M8 PLENA matrix 8 Channel DSP Matrix Mixer
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LBB 1950/10 Plena Tabletop Unidirectional Condenser Microphone
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