Wireless PIR motion sensor 
1.Pet-immunity 
2.Self-checking 
3.Low power consumption 
4.Tril order is acceptable 

Wireless pet- immunity PIR Motion sensor

functions

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 for eight times to host within 4 hours  , it will send the information that the probe was lost.

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