LTECH DALI dimming sensor is a microwave motion sensor with microwave detection and light sensing function combined. Turn on/off DALl drivers or lights, and adjust dimming. Sense daylight &LED light source and adopt a photosensor that removes IR interference to inte-lligently control lights with high sensitivity and anti-interference capacity. Turn on/off and support 2-step dimming & 3-step dimming, making sensors ideal for hallway. stairway and office applications. This compact sensor supports wall mounting and ceiling mounting that let you easily achieve smart lighting control. Easily set up sensor parameters using the remote (LR1) or dip switches.