- 4" B/W video door phone
- Four-wire System
- Handset intercommunication.
- Electric-controlled unlocking
- Monitoring outdoor.
- LED light or IR for night vision.
- 16 chord melodies for ring.
- Installation method: Surface-mounted
- Brightness, volume and chroma are adjustable.
- One camera can be connected to up to four monitors, to satisfy you to know the visitor from the living room, bedroom and kitchen etc.
- It can also support two outdoor cameras to make the visitor can call you from front door or back door.


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