BESNT Wired Wide Angle Passive Infrared Detector Wired Wide Angle Passive Infrared Detector power: 6F22 battery 9V,low power indication,adjustable time for alarm delaydetecting distance adjustable,automatically temp. compensation,anti-RFI & anti-EMI;battery life:1-2 year,Detecting distance: 12m,detecting angle:110 degreessending frequence:433M or 315MHz,sending distance:200m in open area