Door bell Door Viewer Camera Door Peephole Door Camera Doorbell with Wireless Monitor Live View LCD Screen Display: The 2.4 inch LCD screen display allows you to easily see the faces of visitors. It is safer and more practical. Photo Shooting: When the visitor presses the doorbell, the indoor host rings and the LCD screen turns on to take a photo. Power Supply Mode: Powered by AAA batteries (not included), just open the battery cover on the side of the indoor host, no need to remove the doorbell. Wide Viewing Angle: 135-degree wide-angle lens allows you to see a larger picture without missing any visiting friends. Night Vision Function: With night vision function, you can see clearly at night. Specifications: Display: 2.4 inch LCD screen, Image sensor: 1.3 million pixels Viewing angle: 135 degrees Power supply mode: 4 AAA dry batteries(not included) TF card: maximum support 32G Ringtones: 5 Languages: 8 Adapt to door hole: 15-60mm Adapt to door thickness: 40-100mm Indoor unit size: 22*97*97mm Outdoor unit size: diameter 65mm Package List: Indoor host *1 Outdoor handset*1 Metal hanging board*1 Screw bag*1 English operation guide *1