Function: ①2,8 inch super bright TFT LCD display, display images or videos clearly and smoothly. ② HD camera with a resolution of 300 thousand pixels for capturing HD image and video recording, fast and clear shooting and recording guest information. ③ 135 degree wide angle lens that provides a large field of view to ensure maximum safety in your home. ④ 24-hour security monitoring, protects you and your family all day and night. ⑤Infrared night vision: clear image both day and night, you can still see clearly outside in the dark. Specification: Material: ABS plastic Color: Silver Sensor: active digital CMOS image sensor 300 thousand pixels Photo or video: support Ringtones: 32 ringtones available Infrared: 4 infrared LED diodes with night vision function. The LED will open automatically in the dark. Hole diameter: 14-35 mm / 0,6-1,4 inch Door plate thickness: 35-100 mm / 1,4-3,9 inch Product Size: 111*74*20mm/4,4*2,9*0,8inch Including: 1 * display screen 1 * viewfinder 1 * User Manual 1 * installation package