Features: 
*Compact design 
*Auto sensitivity inhibition control  
*360 Degree rotation  
*Reverse detection  
*Selectable alarm contact(NC/NO)  
*UL Approve
*Four-step timer setting 
*Directional/nondirectional setting options 
* Selectable NC/NO type 
*22 pairs (44 zones) for detection 
*Powered by DC 8 to18 V with 25mA 
*Ceiling mount