Product Description
Monitoring button and easy installation;
4 wires in polarty system;
Contrast,brightness and chime volume controls;
Expandable video and audio station.
Screen: 4" B&W Flat CRT;
Video Input Signal: 1.0Vp-p 75ohm;
Communications Method: SYNCHRONIZATION;
Power Consumption: 18 walts;
Dimensions(W/H/D)mm:194*230*55;