1. Strong environmental adaptability. 
2. SMT manufacturing process, strong stability. 
3. Operating voltage range: DC 9-35V. 
4. Low quiescent current. 
5. Metal shield, anti-radio frequency interference. 
6. Quiescent current: <=100uA. 
7. Alarm current: 70-90mA. 
8. Remote output: <=15mA. 
9. Alarm indicator: red LED. 
10. Coverage area: 80 square meters. 
11. Product size: 10.3x4.9cm. 
12. Product material: ABS.