Intelligent Doorbell Wireless Doorbell Home High-definition Night Vision Dingdong Electronic Visual Intercom WiFi Visual Doorbell Features: Real time video calls easily respond to visiting guests. When someone presses the doorbell, the doorbell will push a notification to the phone, and the owner can enter the mobile video call interface. The mobile app can view the situation of people at the doorstep in real-time. Indoor Dingdong machine: If someone rings the doorbell outside, just lightly press the Dingdong machine to remind anyone of their visit at any time. The high-definition infrared night vision can be seen clearly even in the black outside the door, even if you can't out and see your clearly. Automatically to night vision mode under lighting conditions Visual two-way intercom control of all intelligent WIF outside the door, transmission without the need to open the door, and video calls with visitors outside the door can be made using mobile phones to reduce accidents caused by accidental entry Ultra long standby time of 365 days, no disassembly cycle charging, built-in polymer large capacity battery, completely saying goodbye to the trouble of frequent battery replacement 365 days of standby Product Description: Main control: XR872 Memory: 32Mb flash Sensor: 30W GC0328 CMOS sensor Lens: 100 wide angle lens sensor performance: supports automatic white , automatic gain control, and automatic backlight compensation Signal to noise : 41dB Minimum : 0.8Lux/.4 (color mode), 0.3Lux/.4 (mode) Night vision: 2 x 850nm 28Mil high-power infrared light night vision distance: 1 meter for optimal effect, with a maximum distance of 3 meters Video format: JPG Video size/frame rate: 480P/7fps Recording : 1. Press the button to recording; Clud storage image: 5 seconds (5 images) Battery type/capacity: Polymer 803035/800MAH Battery discharge time: Polymer battery dormant standby for 1 year Network protocol: /IP/HTTP//UDP/DHCP/DNS/DNS/NTP/RTP/P2PWIFI connection: 2.4GHz wifi, support (802.11 /n) Dingdong: Supports RF 433MHZ Dingdong Storage: Supports storage function (without card function), with 3-day free circular storage Working voltage: Polymer 803035/3.7VWorking current: 219mA working current, 10mA deep sleep current, 280mA open infrared working current The product includes: Doorbell * 1 Dingdong * 1