Video Intercom System GAI-315 4'' flat B/W CRT monitor. 1)B/W video door phone 2)For access control

Detailed Product Description1)4'' flat B/W CRT monitor. 

Color Video Door Phone 

2)CMOS camera,handset,audio and video communication. 

Color Video Door Phone

1. 4'' flat  B/W CRT monitor.

2. CMOS camera,handset,audio and video communication.

3. unlock, intercom, call other monitors, monitor outside

4. 6 LED lights,External power adaptor.

5. Connection: 4  wire (Up to 5 monitors)