Quicker and more versatile steinel hf 360 ap sensor switch with high frequency technology ideal for a cellar or wash housethis high frequency detector emits a non perceptible signal and reacts independent of temperature to changes in the echo image on movement even in difficult room situations it is suited to an almost instant repose as well as a stagelessly variable range between 1 and 8 metres with its expansive detection area settings rotary control for simple adjustment of range ligh