Two-Way Talk: Smart Wireless Wify 1280X720P Video Doorbell, Can Hear, See And Speak With The Visitors Via Your Phone, Tablet, Pc; It Is A Kind Of Intercome Door Chime; App Control Real-Time: Watch Over Home Security Via The App, Especially When You Are Not At Home; It Will Send A Real-Time Message To Your Phone; Built-In Motion Sensor: High-Tech Designed With Infrared Human Body Motion Sensor And Night Vision; It Will Be Ringing Automatically When The Visitor Come Near, And It Can Work Perfect Well Through The Whole Dark Night; Historical Storage: Supports Auto Video, Voice Calls Recording For Your Timely Checking; Screenshots Supported; Alarming Real-Time: Get Instant Alerts When The Theft Or Burglar Press Your Doorbell Or Trigger Rings Built-In Motion Sensors;