The MEGATRON® FERA damp-proof lights are equipped with a PIR motion sensor that continuously monitors the detection area and instantly turns on the light upon detecting movement. This means that whenever movement is detected within the sensor's range, the desired area will be automatically illuminated for 5 minutes. As long as movement is detected in the area, the sensor will not turn off. The motion sensor can be easily turned on and off using the switch on the end cap.