Features: LCD Display: The LCD display allows you to easily see your visitors' faces. Safer and more practical. Taking photos: When a visitor rings the doorbell, the indoor host will ring and the LCD screen will light up to take photos. When the phone is powered on, you can also press the "power button" to take pictures. Create visitor records easily. Power supply method: Powered by 1200mah battery, you only need to open the battery cover on the side of the indoor host without removing the doorbell. The screen supports power display. Built-in memory: Built-in memory to store photos in a loop without a memory card. Wide viewing angle: The 90-degree wide-angle lens allows you to see a bigger picture and not miss any visiting friends. More functions: supports photo browsing, power-on status settings, and visitor record deletion. Specifications: Model: W8 Display: LCD screen Power supply: 1200mah Battery door thickness: 35mm-120mm Mounting hole size: 14-22mm Packing list: 1* Indoor host 1* Peephole camera 1* Bag screw 1* Bracket 1* User Manual