Feature:1.Wireless Connection, App Control: WiFi connection enables you to remotely control the smart doorbell via the official app.2.Two-way Audio with Real-time Video: When a visitor presses the doorbell, your phone will receive a message as a reminder, and you can have video chat with the other party via app, in which the doorbell camera will automatically save 5 pictures.3.Infrared Night Vision: 2 infrared lights automatically turn on at night for excellent night vision. Day and night mode switch automatically.4.Free Cloud Storage: Cloud storage service is FREE forever. Files can be saved for 3 days.5.Long Battery Life: Due to built-in 800mAh lithium battery, it can work for more than 6 months after fully charged for 1.5 hours. No need to replace the battery.6.No Wiring, No Drilling: No wiring needed while it's working. With gum on its back, it can directly stick onto the wall without the need to punch a hole. Specification:Type: WiFi Video DoorbellColor: Black/grayLens Angle: 120S/N Ratio: 41dBSensor: 30W GC0328 CMOSMinimum Illumination: 0.8Lux/F1.4 (color), 0.3Lux/F1.4 (black and white)Night Vision Distance: 1 meter (optimal range), 3 meters (maximum range)Light Source: 2* 850nm IR lightsVideo Size/Frame Rate: 30W/7fps Battery: 800mAh lithium batteryWiFi: 2.4GHz WiFi 802.11 b/g/nWork Temperature: -1050Work Humidity: