PIR Detector Installation (passive infrared) Switch on the PIR to check for flashing red light (please do not make any fingerprint marks on the surface of SENSOR component). Installation height should be 2.0-2.2 meters from floor (best 2.0meters). By using the provided bracket, mount the bracket to the screw hole in the back cover, and strengthen it by screw, take out the bracket and mount it on the wall by two screws. Press the installed PIR detector to the round hole in the centre of the base bracket, and adjust the detector to the best angle. Note: 1. PIR detector should not face the window 2. In the same detection area, two PIR detector are not permitted in case there is interference 3. Please avoid to it facing, air conditioners, fire stove etc in case false alarm 4. At the start of the PIR detector, needs 2 minutes to sense the surroundings, so please use remote controller to arm after 2 minutes 5. PIR detector can only be mounted indoors and not outdoor