Passive infrared motion detector that responds to moving heat sources (people, vehicles, etc.). When the motion detector detects changes in thermal radiation within its detection range, it switches on the connected devices (such as lighting) for a configurable duration, depending on the set light value. If the heat source leaves the detection area, the motion detector turns off the device after a pre-selected time (ranging from 3 seconds to 20 minutes). An additional feature is the short pulse function, which can be adjusted using the integrated TIME potentiometer located under the sensor's cover ring. This allows, for example, stairwell automation in larger buildings to be activated automatically.