Smart Doorbell 1080P Wireless 2 Way Audio Guard Against Theft Rechargeable Infrared Night Vision Item Type: Smart DoorbellMaterial: ABSModel: W3 Purpose: Suitable for Home Doorbell Colors: White, Black Battery: 3.7V Lithium Battery 4400 mA (Battery Included) Sensor: 1080P COMS Sensor Lens: 6G Wide-Angle 2.2mm Lens Viewing Angle: 120° Horizontally, 150° Diagonally Video Stream: Main Stream 1280 x 720/15fps and Secondary Stream 640 x 360/15fps CMOS Performance: Support Automatic White Balance, Automatic Gain Control and Automatic Backlight Compensation System: Lite OS Standby Time: About 6 Months (wake Up 10 Times a Day, 30s Each Time) Day and Night Conversion: Automatic Switching of Dual Filters Infrared Distance: Approx. 850nm Infrared; Effective Distance Approx. 5m / 196.9in Network Configuration Method: QR Code Distribution Network + Sound Wave + WIFI Fast Connection PIR Human Body Detection: Support PIR Detection and Wake Up Audio Coding Standards: AAC and G.726 Recording Method: Automatic Recording + Event Recording Network Protocol: 2.4GHz TCP/IP, HTTP, TCP, UDP, SMTP, DHCP DNS, P2P Wireless Network: WIFI 802.11b/a/n Passive Infrared Detection of Human Body: Support Function: Two-Way Intercom, Panoramic Display Mode, Sleep Time, Voice Call, Remote Wake-up, PIR Wake-up Mobile Client: Ubox, for IOS11.0, for Android 6.0 and Above Working Temperature: -10℃-+50℃