Outdoor spotlight

How do outdoor floodlights work?

STEINEL outdoor floodlights are predominantly equipped with an infrared sensor.


Infrared sensors react to heat radiation from moving people and switch on, for example: the lighting and switch it off again after an adjustable time.

Mode of operation:

Every body with a temperature above absolute zero (-273.5°C) emits electromagnetic radiation. In the case of human temperature range, this radiation is in the infrared range. The so-called passive infrared motion detectors use this fact.

The heart of the infrared sensor technology is a so-called pyrosensor. This electronic module reacts when the infrared heat radiation within its detection range changes, i.e. when a person enters the detection range. The resulting voltage jump is converted by the system into an electronic pulse that switches the light.

Range: (passive infrared)

The range of STEINEL infrared sensors depends on the direction of movement. On average, the range is approx. 12m when moving tangentially (parallel to the sensor), shortening when moving radially (towards the sensor).

Solar emitters, on the other hand, make a difference. In addition to the infrared sensor, these are equipped with a solar panel and energy-efficient LED spotlights.