Fangrui Product Details [pir Human Detection Instant Alerts]this Wireless Doorbell Camera With Enhance Motion Detector Sensor And Sensor Sensitivity Is Adjustable. When Someone Passes Or Rings The Doorbell Does The Doorbell Immediately Respond And Recording A Short Video, Send Alerts To Your Smartphone. [2-way Audio Hd Live Image]know Whos Before You Open The Front Door. Wireless Doorbell Camera Built-in 2-way Noise-free Microphone And Speaker With High-definition Camera, Enhance 2.4ghz Wi-fi. You Can Also Give The Impression That Youre Even When Youre Not, Speaking To Your Visitor As If Youre There In Person. [ir Night Vision 155 Angle View] Take Advantage Of Every Detail Again, Even In The Dark. The Low-power Video Doorbell Wireless Has Built-in 6 Infrared Lights. The Primary Lens Is 155 Viewing Angle, Ensuring You Get Crystal-live Images, Whether Day Or Night, To See Whos Walking By Your Door. [shared Usage Simple To Install]our Outdoor Doorbell With Camera Allows Shared Up To 9 Users To Connect To Doorbell And 3 User