Features:LCD Screen Display:The 2.8-inch display allows you to easily see the faces of visitors. It is safer and more practical.Photo Shooting:When the visitor prees the doorbell, the indoor host rings and the LCD screen turns on to take a photo. In power-on mode, you can pre "power key" to takes photo too. Easy to make a visitor record.Power Supply Mode:Powered by 4 AAA batteries (not included), just open the battery cover on the side of the indoor host, no need to remove the doorbell. The screen supports power display.Built-in Memory:With built-in memory, it stores photos in a loop, no need for a memory card.Wide Viewing Angle:90-degree wide-angle lens allows you to see a larger picture without miing any visiting friends.More Features:Supports photo browsing, power-on status settings, visitor records deletion.Specifications:Model Number: DD1Display: 2.8 inches LCD screenLCD Resolution: 320*240pCamera Pixels: 0.3MPIR Lights: 2pcs, 850nmMemory: Built-in cyclic storagePower Supply: DC 1.5V AAA batteries * 4 (not included)Door Thickne: 35mm-120mmMounting Hole Size: 14-22mmColor: Silver, Gold (Optional)Host Size: 12.7*6.9*1.8cm/5*2.71*0.70inHost Weight (without batteries): 67g/2.34ozPeephole Size: 5.8*1.3cm/2.28*0.51inPeephole Weight: 27g/0.94ozPackage Size: Approx.14.4*11.2*6.9cm/5.67*4.41*2.71inPackage Weight: Approx. 235g/8.27ozPackage List:1*Indoor Host1*Peephole Camera1*Bag of Screws1*Bracket1*User Manual (English/Chinese)