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The PPM-AS/PSM is an unidirectional addressable condenser paging microphone for IDA8 and DIVA system. In accordance with BS5839, it is monitored by using RS485 protocol over STP CAT5/6 cable, and transmits both audio and power from the paging console to the system units. The PPM-AS/PSM has a gooseneck microphone, a push-to-talk button, zone selection keys and a monitor speaker. Buttons represent a single zone or a group of zones and be easily de­fined in the software using a simple matrix selection. All buttons can be programmed from ATEÏS Studio software and each button can be programmed for PTT (Push To Talk) or latching functionality.