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_x000D_ Material: Aluminum alloy_x000D_ Resolution: 1280 x 720_x000D_ Angle Field Of View: 166_x000D_ Lens: 1.7mm at F2.4_x000D_ Infrared LED: 6 x 850mm_x000D_ Wi-Fi: IEEE 802 11 b/g/n_x000D_ Audio: Two-way talk with noise cancellation_x000D_ Monitoring: Device buttons, motion detection, remote live viewing_x000D_ Notification Function: Push notifications within 1 second_x000D_ Device Wakes Up: Within 60ms_x000D_ Power Consumption: Standby power consumption 200A, working current 170mA_x000D_ APP Download: For IOS for Android for Google_x000D_ 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