7” Handfree Color Video doorphone with optional rings !

Specification:
Power: 13.5V
Screen: 7” LCD
Resolution: 1440(H)*234(V)
Operation Temperature: -20℃ - +60℃
External Dimension:
180(L)*250(W)*25(H)mm
Installation: Surface-mount / Stand alone
Match way: one outdoor camera to one indoor monitor, one outdoor camera to two indoor monitor, two to one, two to two, two to three.
Wired Connection: 4wired or Non-polarity 2wired