Feature:1. Noisefree realtime twoway conversation, compatible for iOS and for Android, 6 mobile phones can share the image of the doorbell at the same time, but only one user can directly talk.2. Support 2.4GHz WiFi, you can easily connect to home WiFi network and send realtime video to mobile phone. Your family can watch videos anytime and anywhere through their mobile phones.3. A 140degree wideangle lens is adopted to provide a clear and wide field of vision outside the door, supporting photography and video recording.4. With a clear 1080P full HD resolution, the doorbell camera's 1080p resolution and WDR function can ensure the best clarity regardless of weather conditions.5. PIR detection and intelligent night vision, low, medium and high sensitivity for your choice. When visitors press your doorbell or trigger the built-in motion sensor, they can get an instant alert.6. Installation without wires and cables, using ultralow power consumption technology, the doorbell is powered by 2pcs 18650 batteries (not included), and the standby time is up to 3 months.7. The method of recording video only supports cloud storage, free 7-day cloud storage is given, and memory card storage is not supported.8. With an indoor Dingdong doorbell, there are 38 built-in ringtones, and the volume can be adjusted freely.Specification:Item Type: Video DoorbellMaterial: ABSMain Control Chip: For Huawei HiSilicon Hi3518EV200Sensor Device: 1/2.7 inch 1080p progressive scan CMOS sensorLens: Full 4G ultra wide-angle 1.7mm lensViewing Angle: 140 degrees horizontalVideo Stream: Transmit 1920 x 1080 / 15fps 1280 x 720 / 30fps 640 x 360 / 30fps 1280 x 720 / 30fpsCMOS Performance: Support automatic white balance, automatic gain control, automatic backlight compensationSystem: For Lite OSStandby Time: About 6 months (wake up 10 times a day, 30S each time)Day and Night Conversion: Automatic switching of dual filtersInfrared Distance: 850nm infrared, effective distance 5-10mIR Control: IR on, night vision function enabled, infrared, ICR automatic detection; IR off, night vision function is disabled, infrared is normally off, ICR is fixed in day vision modeNetwork Configuration Mode: One-key WIFI configuration + sonic configurationPIR Human Body Detection: Support PIR detection and wake-upAudio Coding Standards: AAC and G.726Audio Input/Output: -38dB microphone/built-in 1 speakerRecording Mode: Manual recording, alarm recordingStorage: Cloud storage, free cloud storage for 7 days, memory card storage is NOT supportedWiFi: 2.4GHzNetwork Protocol: TCP/IP, HTTP, TCP, UDP, SMTP, DHCP, DNS, P2PWireless: WIFI802.11b/g/n wireless networkPassive Infrared Detection of Human Body: SupportAdaptive Bit Rate: SupportTwo-way Intercom: Supports full-duplex real-time talkPanoramic Display Mode: 3D simulation and automatic cruiseSleep Time: 15SVoice Phone Call: SupportRemote Wakeup: SupportPIR Wake Up: SupportMobile Client: For ANYHOME, for ios10.0, for android5.0 and abovePower Supply Mode: 2 x 18650 batteries 2600mAH (NOT included)Working Temperature: -20 - +70Working Humidity: 80%RHPlug Specifications: European regulations, American regulations, British regulationsPlug Voltage: 100-240V.Package List:1 x Video Doorbell1 x Ding Dong Bell1 x Screw Pack2 x Manual