This motion sensor, which is a special version suitable for installation in ceilings can be used to automatically switch lights on and off, by detecting movement. This sensor can be used with LED, halogen & fluorescent light sources.
The unit also features an adjustable timer which can be set from 30 seconds up to 30 minutes. The unit also has photocell adjustment, so you can adjust the lux level sensor by 10-2000 lux. This enables the user to determine the lighting level at which the switch operates. For example, it can be set so the lights don't trigger in the daylight.