Size: 2.8 inch LCD Sensor: 1.3 pixel, 130 view angle Power Supply:3AAA, ... conventional door peephole viewers, easy installation, no wiringClear image in LCD Panel on door, easy to see for people of any heightSimply ... zoom Display screen: 2.8-inch high definition screen TFT-LCD Camera angle: 130°Operating temperature range: -10 to 55°COperating ...