Product description Intelligent WIFI night vision low power FHD visual doorbell APP remote language intercom mobile push notification This doorbell is equipped with Dingdong machine as standard, with built-in battery Master control: XR872 Memory: 32Mb flash Sensor: 30W GC0328 CMOS sensor Lens: 100 ° 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: two 850nm Φ 28Mil high-power infrared lamp Night vision distance: 1 meter is the best, and the maximum distance is 3 meters Video format: JPG Video size/frame rate: 480P/7fps Recording mode: 1. Press the key to trigger recording; Cloud storage diagram: 5 seconds (5 pictures) Battery type/capacity: polymer 803035/800MAH Battery discharge time: polymer battery dormant for 1 year Network protocol: TCP/IP/HTTP/TCP/UDP/DHCP/DNS/DNS/NTP/RTP/P2P WIFI connection: 2.4GHz wifi, support (802.11 b/g/n) Dingdong: support RF 433MHZ Dingdong Storage: support cloud storage function (without TF card function), and free circulation cloud storage for 3 days“ Working voltage: polymer 803035/3.7V Working current: 219mA working current, 10mA deep sleep current, 280mA open infrared working current USB charging voltage: DC 5V/1.5A Storage temperature (℃): (0 ℃~50 ℃) Operating temperature (℃): - 10~50 ℃, working humidity<95% Wake-up mode: 1. The doorbell button wakes up, APP access doorbell rules: 1 main account+8 shared accounts=9 users can connect to the doorbell, only 3 users can preview the screen at the same time, and only one user can talk to the doorbell at a time“ Purpose: Guests can make video and voice calls and make short videos when visiting. The host can know the information of visitors without opening the door Features: wireless connection, ultra-low power consumption, and online viewing with multiple accounts