Smart Human Motion Detection ： Wifi doorbell camera is the smart PIR Motion Detection: Sends alerts as soon as motion is detected or when visitors press the Doorbell. Low, midium and high sensitivity within 11.48ft for you to choose. Respond in Real-Time : Doorbell camera speak directly to anyone who approaches your front door via two-way audio. Tell your friends to come round the back or that you have just run out to get some milk. Full HD & Night Vision : offers you crystal-clear images and video recordings. Built-in IR lights permit you to see clearly even in darkness. Night vision distance up to 32ft. Intelligent IR-CUT automatically sense the ambient light and switch to night vision mode. Support Two Power Supply Methods :Battery powered directly or hardwired using AC 8 to 24V.Use low-power chips (full charge can support 2 months use),more safer.Please fully charge the device before use. Easy to Install & 1 Years Warranty : Use QR code to connect your phone in 1 minute without