Specifications:Operating voltage: DC 9V-16V (9V 6F22 Battery NOT included)Static current: 25uAAlarm current: 15mADetecting distance: 6-8mDetecting angle: 15-110Frequency: 433.92MHzEffective distance: more than 80m (open area)Low battery indicator: Blue LEDAlarm indicator: Red LEDSensor: dual element infrared sensorOperating temperature: -10 ~ +50Environment humidity: 95% RH (no congelation)Anti RF interference: 10MHz 1GHz 20V/mInstallation mode: wall mountedColor: WhiteItem Size: 11.0*7.0*4.2cm/4.33*2.75*4.2inItem Weight: 68g/2.40ozPackage Size: 13.0*7.4*4.9cm/5.12*2.91*1.93inPackage Weight: 99g/3.48oz Features:Features with a wider angle, it is specifically designed for the windows.The curtain detector will send the alarm signal to the alarm host if human movement is detected.Wireless passive infrared detector with high stability adopted advanced technology in signal processing, provide super high detection ability and anti-error alarm.Low power consumption design, longer battery standby time. It can be used in summer and cold weather (indoor only).If the control panel did not receive a signal for 8 times during 4 hours, it will send the fault information about the detector is lost.