Features:\r\n\r\nPIR Motion Sensor & Notifications\r\nDownload the UBell APP and get it paired with your phone. When someone push the button or PIR activated, you will get notification and see anything in front of the doorbell.\r\n\r\n\r\nHigh Resolution\r\n720P HD video, two-way audios and 170°wide angle, enable you to check your door with clear scenes and talk to visitors.\r\n\r\n\r\nShare your video doorbell with your family\r\nThis video doorbell can be shared to your family members via QR code to multiple devices.(IOS and Android)\r\n\r\n\r\nWireless or Wired Installation\r\n1) Wireless Installation: Includes 2 rechargeable batteries, you can charge it using the USB port.\r\n2) Wired Installation: Connect the 8-24V AC input with the 2 screws on the backboard, directly powered by the AC input.\r\n\r\n\r\nAnti-theft Notifications.\r\nEquiped with anti-theft screws. If the doorbell is taken off by force from the back cover, you will receive notification immediately.\r\n\r\n\r\nTips:\r\n1.Please remove the insulating film on the battery before using.\r\n2.When pairing, it need a strong wifi signal(2.4G), the distance between the mobile phone and the doorbell is not more than 20 cm, and within 15-20 meters from the router during the pairing.\r\n\r\n\r\nSpecification:\r\nPIR Motion Sensor: 20ft, High/Medium/Low.\r\nWiFi: 2.4 GHz.(5 GHz not supported)\r\nNight vision: IR LED*6, 20ft\r\nBattery: 3.7V/2200mAh, 2 18650 batteries(included), fully charged time about 10 hours.(FCC, CE, Rohs and International Insurance)\r\nPhoto/Video: 1280*720, 640*360 JPG JPEG/720P, 360P MP4.\r\nWaterproof Level: IP42, Splashproof.\r\nExternal Power Supply: 8-24V AC/DC.\r\nStorage: 1. Cloud Storage, free storage for 7 days./2. 16G SD card(included), support micro sd card 1-32GB.\r\n\r\n\r\nAccessories:\r\n1*Mounting bracket\r\n4*Mounting screws\r\n1*Security screw\r\n4*Anchors\r\n1*Hex key\r\n1*User manuall\r\n2*18650 Battery\r\n1*16GB Micro SD