Features:Wireless、 infrared detector、 motion-activatedAccurate identification、 owner identification delay alarmLong-range multi-channel wireless remote controlAdjustable mounting unitInclude 2 direct infrared remote controls; please use it directly facing to the sensorTechnical parameters:Alarm sound level: 105dB (decibels)Remote control distance: about 0-5 meters (open land)Detection range: 0-5 meters distanceWorking voltage: DC 6VThe motion detector power by 4 AA batteries (not included)The remote controller power by 3 AG13 batteries (not included)Installation requirements:Warning devices on the remote control infrared range of protection should be able to look straight can not have obstacles.Install warning devices should be avoided near infrared heat source、 such as hot and cold air outlet、 air conditioning vent、 heater、 cooler、 etc、 to avoid the straight door.There should be 10 to 30 degree angle between the wall and remote control infrared warning devices; you can adjust the detection distances according to actual installation angle.Warning devices as remote control infrared lens in the human lateral movement relative to the most sensitive infrared detection、 and vertical motion sensitivity is poor、 so the installation should pay attention to the angle between the horizontal and height detectors、 which have great impact protection area.Package includes:Alarm sensor x1Remote control x2Mount bracket x1