INTEGRATED VOICE AND DATA COMMUNICATION FOR INTERCOM AND ALARM

摘要

An integrated radio intercom and alarm or alert for use as a door sentry incorporates a programmable dual mode, dual frequency FM transceiver (11, 12), enabling both speech communication between a mobile remote handset (33) and a base station (32), which in turn relays signals from a door switch unit (31) and also alarm or alert condition warning data communication with a remote alarm transducer (34), to generate an alarm or alert siren warning tone in the handset and base station.