Video Doorphone

Features:
1) One door station can support up to 4 indoor phones.   
2) Handset B/W video door phone with 4"CRT screen and CCD or CMOS camera.            
3) LED in the door station provides a clear picture even in nighttime.
4) 10 seconds ring tones, 30 seconds active surveillance and 120 seconds intercom are available.
5) Double ding-dong ring,remote door unlocking and waterproof are available.
6)Connection:4 or 5 wires
7) Panel: Plastics
8) Installation:
a) For door station:surface or flush mounting
b) For indoor phone:surface mounting
PS.  681B is black and white video
       681C is color video

Video Doorphone
Video doorphone, competitive prices and great quality.