This presence detector can be said to see through walls. It features high-frequency technology at 5.8 GHz and utilises the Doppler radar effect. Thanks to its high sensitivity, it can detect even minute hand movements. Also, unlike the PIR presence detectors, it does not suffer from blind spots in its surveillance area: both radially and tangentially, and irrespective of the axis of motion, its range is huge. Its capacity to see through glass, brick or wood allows for concealed installation. If there are certain areas you wish to exclude from detection, the detector can be set up accordingly. The high-frequency presence detector is unaffected by temperature and operate reliably even in unfavourable climates. The dual-channel version lets you connect an additional consumer besides a light. This presence detector offers a high energy efficiency through regular light balancing and offline function when there is sufficient daylight.