Steinel is 180 2 motion detector stainless steel best steinel quality slim elegant design with up to date sensor technology two highly sensitive detectors arranged next to each other at a special angle allow reliable surveillance of large areas up to 200 minfrared wall sensor ideal for surveillance of large house fronts as well as indoor areas such as entrance halls or cellarstwo default detection ranges can be set by simply turning the multi lens over 5 m 40 m or 12 m 200 m the