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Features: Long Standby: No disassembly cycle charging Built-in high-capacity lithium-ion battery, long standby time The doorbell operates on a built-in large battery, no need for frequent charging; and the chime is USB powered, easy and convenient to use Video Call: Easy to deal with visiting guests, when someone presses the doorbell, the doorbell will send a notification to the phone, and the owner can enter the phone video conversation interface Portable Installation: Can be pasted and perforated. Supports adhesive backing, no need to drill holes, while supporting hole punch installation. No problem, convenient and hassle-free tsaptureScreenshot:storagetothecloud,"securityprotectiondripWhenAVisitorpressestheDoorbellitcanCapturethevisitorspicturandsavetherecordtothecloud,"Sothatthecellphoneappcanviewfitspicturesatanytime,"vgichissaferandmoreSecure Wireless Video Doorbell Camera: Supports 2.4G WiFi and APP connection, 480P high resolution , p resenting iu clearer pictures, videos, and more details2-Way Audio: With built-in mic, iu chan se and talk to iur visitors antime and anywhere NightVision:Built-inhigh-qualityIRLEDlampbeadsandlightsensor,thepicturisclearatnightSocanautomaticallyswitchtonightmodefromdaymodeaftertheambientlightdropsdownto2LuxStrongandstablesignalEasytopairup,"transmissionrangeupto50metersringtonesandvolumecanbeadjustedaccordingtoiurPreference Specification: Name: Smart Doorbell Material: ABS Plastic Electronic Components Color: White, Black MaxResolution: VGA, 640*480 Video Coding Standard: MJPEG Audio Coding Standard: G711.A Video Frame Rate: VGA@20fps Day/Night Mode Switch: Automatic Video Transmission Encryption: AES Radio Frequency Coding: EV1527 Infrared Lamp Control: Automatic, Adjustable Sensitivity Infrared Lamp Wave Length: 850nm Motion Detection: Automatic, Adjustable Sensitivity Connection Mode: 2.4G WiFi Wor king Temperature: -10~45℃ Working Humidity: ≤95% Doorbell Battery Capacity: 800mAh Package List: 1*Smart Doorbell Includes Lithium Battery Inside 1*USB Cable 1*User Manual 1*Some Screws