This is a PIR motion detector. When an intruder is detected in the armed state, it will trigger an alarm and connect to the host via wireless signal.

This is a wireless door/window sensor. When in the armed state, illegal intrusion will trigger an alarm and connect to the host via wireless signal.

This is a wireless smoke detector that triggers an alarm when smoke is detected and connects to the host via wireless signal.

This is a wireless gas detector. After detecting a gas leak, it can cut off the gas source through the linkage control of the solenoid valve and the manipulator, and connect to the host through a wireless signal.