Version  Menu    Home    Index    Solution	Radio transmitters by current carrier   CP1 Acoustic surveillance system transmitted on the 220 V mains. The sounds received by the ambient microphone of the special transmitter are carried on the line by a non-audible carrier frequency. Its small size allows it to be easily placed in the area to be watched. A receiver, connected to another part of the line, allows conversations to be heard, after demodulation of the carrier frequency. Optional: the receiver can be equipped with a cassette recorder. Two levels of power are available: ECP1: medium ECP2: high         [Home] [Index] [Solution] G.I.A. Servizi s.r.l. Str. degli Angariari, 25 int. 36 - 47891 Falciano (RSM) Email: sicprod@gia-servizi.sm