1、Professional Security Lens: Infrared night visual high resolution door surveillance camera, easy to install, stable wired connection, suitable for home security. 2、Visual Intercom: Support video intercom, clearly visible to outsiders, can prevent robbers and thieves from committing crimes. Not only household, corporate units, hotel apartments, factory base applies. 3、Built In Power Adapter: Say goodbye to the bloated external adapter, more space saving, more beautiful, environmental, low energy consumption, energy saving and save electricity costs. 4、Practical: 1 outdoor camera and 2 indoor screen video intercom doorbell system for a building with two families living in it, ringing independently, unlocking at the touch of a button, and also letting you see and hear security monitors and displays. 5、16 Different Doorbells: Volume, brightness and contrast adjustable Stylish and beautiful design, suitable for all styles of houses. Item Type: Video Doorbell Material: ABS Weight: Approx. 1750g / 61.7oz Camera (Outdoor): Camera: 1/4 HD CMOS Light Source: 6pcs Infrared Light Resolution: 800x600 Pixels Display (Indoor): Resolution: 800x480 Pixels Wiring Method: 4 wire 2 x Indoor Screen 1 x Outdoor Camera 4 x Iron Sheet 1 x Back Bracket 3 x Connection Line 8 x Expansion Screw 8 x Metal Screw 1 x Instruction Manual 1 x Plug