Feature: 1. 4 WIRE VIDEO INTERCOM SYSTEM: Equipped with a 7 inch color LCD indoor monitor that features a straightforward operating system, slim design, and stylish touch buttons. The outdoor doorbell comes with a HD camera, offering a wide 120 degree viewing angle, HD quality, night vision, and a rain and vandalism resistant design. It also controls electric control locks and electromagnetic locks. 2. INDOOR INTERCOM MONITOR: When someone presses the call button on the outdoor unit, you can see and talk to anyone at your doorstep. The lock allows you to open the door safely and conveniently from inside your home. 3. INFRARED NIGHT VISION OUTDOOR CAMERA: Comes with built in 6 IR LEDs, allowing you to see outside no matter the time of day or night, adding an extra layer of safety to your home. 4. MULTI FUNCTIONAL: Offers 16 different doorbell chimes, and adjustable volume, brightness, and contrast. Further, it features an infrared night vision camera, an electric lock control function, hands free intercom, and automatic shutdown. 5. VERSATILE USAGE: Ideal for various settings such as villas, homes, offices, office buildings, and government agencies, the intercom doorbell kit has its adaptability and broad functionality in various scenarios. Specification: Item Type: Video Doorphone System Material: ABS Camera Parameter: Lens: 1/4 HD CMCS Resolution: 800 line Exposure: 0.02 LX Light Source: 6 IR leds Power: From the monitor Display Parameter: Screen: 7 inches Resolution: 800 x 480 Video Input: 1Cp-p 75Ohm Ringtone: 16 x 4 melody Display Time: Intercom 60s and monitor 30s Power Consumption: Standby 0.2W, working 8W Installation: Wall hanging. Package List: 1 x Monitor 1 x External Machine 1 x Power Adapter 7 x Screw 6 x Expansion Tube 1 x Nut 3 x Connecting Cable 1 x Manual