Features: 1.HD Video Doorbell: High definition pixels with 166 wide angle lens, resolution 1280x 720, clearly see visitors outside the door. 2.APP Remote: Support mobile phone remote to quickly wake up the device within 1 second, support for IOS and for Android mobile phone download APP. 3.2 Way Intercom: 2.4G Wi?Fi connection, quality two way calls, with noise cancellation function, protect the safety of family members. 4.Motion Detection: Support PIR motion detection, alarm push notification to mobile phone when someone hovers at the door immediately 5.Infrared Night Vision: Day and night mode automatically switches, no matter day or night, the image is for your safety and home safety, clearly visible. Specification: Item Type: Video doorbell Material: Aluminum alloy Resolution: 1280 x 720 Angle Field Of View: 166 Lens: 1.7mm at F2.4 Infrared LED: 6 x 850mm Wi-Fi: IEEE 802 11 b/g/n Audio: Two-way talk with noise cancellation Monitoring: Device buttons, motion detection, remote live viewing Notification Function: Push notifications within 1 second Device Wakes Up: Within 60ms Power Consumption: Standby power consumption 200A, working current 170mA APP Download: For IOS for Android for Google Battery: 3 x Lithium battery 18650 Each Battery: 3000mAh (built-in) PackageList: 1 x Doorbell 8 x Screw 5 x Expansion Tube 1 x Sticker 1 x Manual