Smart Life Peephole 2.4G Wireless Wifi 4.3inch Screen Viewer 3MP Security Home Video Door Eye With Camera

One Way Audio: You can check who at door and hear what the visitor say.But visitor can not hear what you say. Because door camera is so small that can not install the speaker. Alexa models(Optional) You can voice command to wake up door viewer with: alexa, show me device name ; View Angle and PIR Motion Detection It has 130° wide angle,when somebody pass by your door(you can set the sensitivity of the PIR to control the trigger distant) ,the camera will start recording 20 seconds video,and your phone will receive a notifiction. 3MP High Resolution Peephole Door Camera Provide high clear day and night view Battery Capacity and Charging Attention 2-3 months' Use with 5000mAh Battery Built-In based on 10 events per day; Battery NOT replaced. It takes at least 8~10 hours to charge,you must use 5V1A charger,do not use fast charger!!!! Please note,otherwise the battery is easily demaged.