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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
PRS‑SWCS PC Call Server and PRS‑SWCSL PC Call Server NCO Client
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PLN‑24CH12 24 V and PRS‑48CH12 48 V Battery Chargers
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LBB 9082/00 Unidirectional Gooseneck Microphone
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