1.detection  distance 12m
2. passive  infrared motion detector technology
3. CPU processing ,reduce false alarm    
4. auto temperature compensation
5.2 levels pulse signal processing, be optional
6. anti-white light, anti-RFI(25V/m-1GHz)
7. particular  anti-fluorescence ,low consumption
8 fei nie er Fresnel lens ,high density SMT design
9.C model output, surroundings memory function
10.perfect outshell, simple installation the best choice