1.Wireless pir sensor
2.Self-checking function

 1.Power-saving mode: using different signal processing methods to achieve the power-saving mode, the ordinary single-technology detectors, high-energy batteries can be used on for 12-36 months.

2.Self-checking function: if didn't send signals to host within 4 hours  , it will the information that the wireless pir sensor was lost.

3.The probe has two ways about learning code and timely code,it is simple and reliable.