product description: The appearance of the door station is similar to the traditional optical cat's eye, and the hidden camera 3 inch TFT LCD screen, 640*480 300,000 professional security cameras, 135-degree wide-angle Power supply: built-in 1200mAh rechargeable lithium battery Zoom: 3x digital zoom, PIR motion detection Human body sensing function Infrared night vision, Ding-dong doorbell, camera function The built-in 8M memory can store about 90 pictures, cyclic storage, and a maximum 32G memory card can be inserted Ringtones: 4 Languages: 3 Adapt to door hole: 14-60mm Adapt to door thickness: 35-110mm packing list: 1: Indoor host *1 2: Outdoor handset*1 3: USB charging cable*1 4: Metal hanging board*1 5: Screw bag*1 6: English operation guide*1 Product packaging size and weight: Color box size：143*116*70mm (including color box) total weight:340g