The Sonoff Sensor PIR2 is a 433MHz RF motion detector for detecting people. It can work with the Sonoff Bridge 433MHz, providing the user with an alarm message from motion detection in the surveillance area.
At the same time, it can give commands for various scenarios with other Sonoff devices. A prerequisite for controlling the sensors is the connection of the PIR2 with the Sonoff Bridge 433 on your SmartPhone.
Additionally, it connects with Alexa Google Home, allowing you to make smart DIY moves to activate other Sonoff smart devices for your home security anti-theft system.