Why is a PIR Better Than a Beam in Your Intruder Alarm? Firstly let me explain these two intruder detectors in a bit more detail. Acitve Infrared (IR) Beam This detector consists of two parts, the transmitter and the receiver. The transmitter emits a beam of infrared (IR) light and the receiver picks up this […]
Category Archives: Alarms
Because the detection angle of most PIRs is 90 degrees, it is best installed in the corner of the room at a height of about 2.2 metres. For best results consider the following points when selecting the mounting point of your PIR:– Ideally the PIR should be mounted so that the path of an intruder […]