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.
Battery Capacity and Charging Attention
1-2 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.