Function introduction: The smart door peephole has a high-definition TFT LCD display of about 2.4 inches/6.1cm. And 300,000 pixel CMOS active digital image sensor camera, 6 kinds of ringtones to choose from.135-degree wide-angle door mirror: The outdoor camera of the smart door peephole kit is designed with a 135-degree wide angle, so that you can see the scene in your courtyard and maximize your home security.Infrared night vision: electronic cat's eye with light sensor, and four infrared LED lights. When the light becomes dim, the cat's eye will automatically switch to the high-definition night vision function, which can record the picture clearly even at night.Durable material: Made of hard ABS and zinc alloy material, durable and high strength, better protection against external damage. Can be easily installed on iron doors, wooden doors, security doors, glass wooden doors.