【DIY】: Easy to install. 3M double-sided tape (included) can be used to fix the sensor 24/7 Professional Monitoring: The smart PIR sensor provides 24-hour monitoring for your home. Use it in a room or anywhere you want to be notified when there is movement or motion. Catch every activity and send an alert to your Android or Apple phone. It is easy for you to keep an eye on your home security anytime, anywhere Fast Instant Alerts: When it is triggered, such as human movement or motion, an instant notification will be reported to your smartphone within 3-10 seconds depending on the internet speed. The built-in redial function allows the PIR sensor to automatically connect to the network after resetting the Wi-Fi router 【Two Mode Switch】: There are two modes for this sensor. 2 and 4 minutes mode. The sensor will detect the first movement instantly and then wait 2 or 4 minutes before detecting the next movement. This will prevent false alarms and also save battery life. You can choose what