The electronics used with the PIR sensor/switch have been designed to detect the movement of body heat to activate the sensor. Once the sensor has been triggered, the unit will switch on for the specified time before automatically switching off, preventing any unnecessary load, thereby extending battery life. If continuous movement is detected then the lights in the vehicle will remain on. This not only saves on battery power but there are also cost savings to be made on installation as a separate switching device is not required. The Nebula PIR incorporates the Orizon LED strip light, which uses the latest LED technology, offering optimum performance and extended life. The unit is available with 12, 24 and 48 LEDs, offering a choice of light output and lengths to a wide variety of applications and budgets. The Nebula PIR is simply fixed into place by the end caps, making it suitable for both new vehicle specifications and retrofitting into existing vehicles.