Visual intercom function and visit reminderWhen the visitor presses the doorbell, the mobile phone answers the call, then press Answer to talk with the visitor on the screen of the mobile phone or the laptop; when the customer comes, the doorbell will ring "ding dong" to remind you. Human sensor motion detection: once the human sensor detects a person nearby, it will send an alert to your smart device. You can adjust the sensitivity of the human sensor to find the perfect setting for your home. When the mobile phone or APP is turned off, the video mode will be activated to record short videos without missing a minute or a second. Lifetime Free Cloud StorageLifetime cloud services are free. With the help of Cloud Service, you can view, customize, save and share documents in seconds, or view details throughout the day. Videos can be stored in the cloud for 7 days and connected to WiFi, allowing you to watch, record or share videos at any time. Night vision function and 166 wide angleLens HD infrared, accurate monitoring