ST500 is a Radar based movement detector for objects moving up to 50km/h. It consists of a Radar and a brightness processing section. It can directly be connected to a standard LED driver. ST500 provides an isolated 1-10V standard analog output for driving LED power supplies. An additional isolated digital output becomes active during object detection. ST500 allows individual settings of full and dimmed brightness, up an down ramp times, hold time and sensitivity. Large input voltage range allows connecting ST500 directly in parallel to the LED array.