Home Protection: The anti-theft doorbell can be installed outside the door, with large wide-angle high-definition clear video, to better protect your family and property HD Night Vision: The smart doorbell has a night vision function, just press the switch, allowing you to enjoy high-definition picture quality at night and other low light Long Working Time: The doorbell is equipped with an ultra-low power consumption chip and a powerful 800mAh battery, which can work for a longer time under normal use App Control: The doorbell can be controlled through the APP, connect the doorbell to your mobile phone through the APP, automatic working mode, intelligent and convenient 2 Ways Talk: Enable notifications and 2-way talk by pairing with selected supported devices, allowing you to check in, listen to, or participate in conversations Description: A -to-install wireless security smart doorbell, 120 wide-angle lens, automatic video recording, cloud storage, and high-definition night vision, allowing you to have clear vision at night and other low light. Specification: Main control: (CP+4:21U) XR872 Memory: 32Mb flash Sensor (sensor): 30W GC0328 CMOS sensor Lens: 120 wide-angle lens Sensor performance: support automatic white balance, automatic gain control, automatic backlight compensation Signal-to-noise ratio: 41dB Minimum illumination: 0.8Lux/F1.4 (color mode), 0.3Lux/F1.4 (black and white mode) Night vision: 850nm28Mil high power lights Night vision distance: 1 meter is the best, the longest distance is 3 meters Video format: JPG Video size/frame rate: 30W/7fps Recording : 1. Press button to trigger recording; Cloud Storage Map: 5 seconds (5 images) Battery Type/Capacity: Polymer 803035/800MAH Battery discharge time: polymer battery sleep standby for 1 year Network Protocol: /IP/HTTP/UDP/DHCP/DNS/DDNS/NTP/RTP/P2P WIFI connection: 2.4GHz wifi, support (802.11 b/g/n) Ding Dong: Support RF 433MHZ Ding Dong Memory: "Support cloud storage function (hardware without TF card function) 3 days free circulating cloud storage" Working voltage: polymer 803035/3.7V Working current: working current 219mA, deep sleep current 10WA, night vision working current 280mA USB charging voltage: DC 5V / 1.5A Storage temperature (): (050) Operating temperature (): Working temperature: -1050, working humidity Product List: Smart doorbell*1 Dingdong machine*1 Installation package*1 Manual*1 Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed in the pictures. 2. Please forgive a slight measuring deviation due to manual measurement.