Product name: Vm-3.0
Clicks: 5 times
Type: Video inter-conversation Doorbell Vm-3.0

Description:
High resolution ratio display(4 black and white plane picture screen)/ Talking with doorway/ Open the door/ Number circuit design/linked with extension/ two vidicons/connect with picture memorizer/ Wall hanging type setting/ offer very clear picture, setting is very simply, many types for choice, satisfactory.

Talking mode: Full duplex;
System capcity: 2*tenement doorway, 1*extension, add display,
Electrical source: AC 100~240V (unrestricted voltage),
Power: 18W,
Size: 196(W)*220(H)*52(D)mm.