Aiphone Corporation C-123L/A - Chime Com - Single Master SET1 Door/1 Ro

C-123L/A: Single master set includes a door station (C-D) and a master stations (C-ML/A). Additional masters may be added. Each master requires a separate power supply either the SKK-620 or 4 "C" batteries. The door station calls the master(s) by pressing a call button that initiates a chime. Communication is is Push to talk/release to listen at the master and hands free at the door station. Communication times out after being idle for twenty seconds.