■ Multi-user intercom 4-way kit. Build-in microcomputer-controlled circuit and coding and decoding digital circuit. Only 4 cables for connecting all the units with stable performance and anti-interference function.
■ Intercommunication is available between indoor phones with privacy kept.
■ Busy line reminding and ring-off indicating
■ Centralized power supply.
■ Clear voice.
■ Maximum talking distance: 300m.
■ 4-wire connection.
■ Enclosed an adapter.
■ Four interphones ■ One transformer
■ Four brackets ■ Screws
||AC 100-240V 50Hz/60Hz
||Static State <1.2W
|Talking State <1.5W
|Audio anti-distortion power
||no more than 20mW