The ViaLux E motion detector detects invisible infrared radiation from people and other heat sources without emitting radiation itself. When a heat source moves within the detection range of ViaLux E, the device activates. As soon as no more movement is detected, the device deactivates after an adjustable delay time. ViaLux E is not suitable for alarm systems. The ViaLux E circuit only reacts when the light conditions are below the selected level.