Flush-mounted magnetic detector, Ø 6.5 mm (brown) Magnetic detectors constitute basic elements of perimeter protection systems and their primary task is to detect attempts of opening doors and windows. Miniature B-2S BR tight face magnetic detectors are designed for flush mounting in door or window leaves and frames. This mounting method makes them invisible from the outside. The detectors are available in white and brown colour versions. - recessed mounted - small sized sealed body (Ø6,5mm) - Sold in 10-pack