JBL CSPM-4 CSM 4-Zone Paging Station Dynamic Microphone for Two Linked CSM32 Devices, 150Hz-15kHz, -54 dBV Sensitivity, 530Ohms Impedance, 133dB Max SPL

The JBL CSPM-4 CSM 4-Zone Paging Station Dynamic Microphone features close-talking for paging systems in bars/pubs, theatre lobbies, department store and more. A single cable attached to the CSPM-4 contains three conductors for audio (Positive, Negative, Shield) and five conductors for contact closure (Zone 1, Zone 2, Zone 3, Zone 4, Ground). Selecting a zone and pressing and holding the PTT button will route the microphone audio to that zone.