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The JBL Commercial CSPM-2 Paging Microphone is a dynamic close-talking microphone for paging systems in bars/pubs, theatre lobbies, department stores, and much more.
A single cable attached to the CSPM-2 contains 3 conductors for audio (Positive, Negative, Shield) and 3 conductors for contact closure (Zone 1, Zone 2, Ground). Selecting a zone and pressing and holding the PTT button will route the microphone audio to that zone.
When the PTT button is on (pressed), zone buttons are connected to the G pin and sound is routed according to the state of the zone buttons. When the PTT button is off, the zone buttons are opened and no sound will be sent to any zones.
Press the zone buttons to select which zones will receive the paging announcement once the PTT button is pressed.