1、Indoor Intercom Monitor: When someone presses the call button on the outdoor unit, you can see and talk to anyone who comes to your door. That way you can open them safely and easily at home. 2、Waterproof and Durable: 92 degree viewing Angle and durable abs panel to protect against potential damage. Waterproof, and you can see night clear images regardless of weather or time of day/night. 3、HD Video: Wired Video intercom system doorbells are equipped with a high definition camera to provide clear, delicate video picture, allowing you to see the visitor's facial features more clearly. 4、Powerful Night Vision: Even in the dark can also provide a clear picture,the outdoor camera let you know the situation at home anytime and anywhere. 5、Safe and Convenient: Stable wired connection, clear home security vision, can know the outside world without leaving the house. It can be used for apartments, villas, hotels, offices and public buildings. Item Type: Door Video Intercom System Material: Abs Plastic + Glass Function Support: Smart App Remote Control Call/Unlock/Recording Camera LED Infrared Night Light Resolution: 800 X 480 Optimum Distance Support 64g Video Memory Card (Shipped Without Tf Card) Operating Temperature Range: -30-60 Degrees Celsius Installation Method: Surface Installation Rvv4 Core Component Connection Distance: 100m Camera Sensor: Cmos 700tvl 3.6mm Lens Power Supply: From the Indoor Monitor 1 x Indoor Mointor 1 x Outdoor Camera 1 x Instruction Manual 1 x Power Adapter 1 x Support 1 x Test Cable 7 x Screw 7 x Plastic Screws 1 x Wrench 1 x Screw 3 x Core Wire