product description: The appearance of the door station is similar to the traditional optical cat's eye, and the hidden camera 2.4 inch TFT LCD screen, 320*240 300,000 professional security cameras, 90-degree wide-angle Power supply: built-in 600mAh rechargeable lithium battery Infrared night vision, Ding-dong doorbell, camera function The built-in 8M memory can store about 90 pictures, cyclic storage, no need to insert a card Ultra-long standby Minimalist design, easy to operate, plug and play Support door thickness: 35-110MM Door hole diameter: 14-22MM packing list: 1: Indoor host *1 2: Outdoor handset*1 3: Metal hanging board*1 4: USB charging cable*1 5: Screw bag*1 6: English operation guide*1 Product packaging size and weight:Color box size：12.2*10.5*7cm (including color box) total weight：206g