4" Doorphone (Intercom) with touch buttons, door unlocking, PW02 adapter, white

Intercom - 4" Color Display with Built-in Microphone, Speaker
Control with touch-sensitive buttons
You can unlock the door remotely using a key
When you turn on the intercom, you can watch a live feed from the doorbell video camera.
The intercom supports the connection of an additional call button, e.g. at another door or gate.
The intercom supports the connection of 3 additional intercom devices, e.g. those placed in other rooms or locations
You can choose one of 25 polyphonic ringtones.
Specifications:
Power supply: DC14.5V/0.8A
Power consumption: 5 W (max.) / 0.3 W (standby)
Resolution: 480*272 digital LCD panel
Wiring 4 wires
Effective length: Maximum distance between call button and intercom 100m
Dimensions: 180*112*17mm
Weight: 260g