A Mains powered PIR sensor with adjustable 'on' time and light level sensitivity. The PIR415 PIR sensor is suitable for fitting inside walls, doors or ceilings, it only requires a 12mmØ hole. The sensor has adjustment for high and low light level and movement sensitivity. The PIR output can be adjust to stay 'on' between 5, 30 or 60 seconds or between 3, 5 or 8 minutes. These adjustments are made using the DIL switch fitted in the main module.