Motion recording is an effective way to reduce storage and bandwidth in video surveillance. However, in some scenarios it is very difficult to get an accurate motion detection from the camera. Thanks to the passive infrared technology used in AXIS T8331 PIR Motion Detector, the detection can be more accurate with less false alarms. Quick and easy to connect the PIR to the camera with a single cable thanks to the same type of I/O connector. The included tripod thread bracket makes it possible to install the PIR to a standard camera mount for precise alignment of the detector.