4.3 inch wired Audio/Video Doorbell Answering System 1-Camera 1-Monitor.

The display image is very clear with 4.3" high resolution colorful TFT LCD and IR camera. The clear picture will surely satisfy your requirements, which will enable you to see clearly who is at the door.
The camera mounted at the outside of the door which make you talk with the people at outside easily.
This 2-way communication is an inexpensive and effective way to talk with the stranger at the door without actually opening the door.
Surprise visitors can be great, but they're better when you can decide whether to greet them, before you're at the door. you get a home phone doorbell for a convenient connection to your front door.
The distance cannot exceed 30 meters if use network cable.

Monitor
4.3" high resolution color TFT LCD.
Collocation telephone set panel,fashionable and luxurious.
Compatible with electronic door lock.
Intercom between handset and camera.
One camera can be connected to up to four monitors.
Easy installation and reliable, its appearance is beautiful.

Camera
High resolution 700TVL CMOS Camera.
View angle: 92 degree, Dual-way intercom. Power Supplied by indoor monitor DC 12V.
Compact design and mini size easy to install.
ABS Plastic,Aluminum wire drawing.
Dimensions: 3.1 x 7.1 x 1.9 inch.
Weight: 0.48 pounds.

Packing includes:
1 * Outdoor camera
1 * Indoor monitor
1 * Power supply adapter
1 * 4-core/5-core short connection wire
1 * 2-core short connection wire
1 * Bag screws
1 * User manual

Note:Electric bolt lock, Electric strike,Electric magnetic lock,need extra "Power Supply Control" connecting the lock.
Please search ASIN: "B01MFF4X9R" for Dedicated Power Supply Control.