The opening detector is a magnetic contact for securing doors and windows. Unauthorized opening is detected and reported to the alarm control unit. The opening detector consists of a magnetic contact (reed) and a magnet. These are attached either parallel, front side or orthogonal to each other - at a distance of at least 13 mm. The circuit of this opening detector is normally open. If the distance between reed and magnet Increases by approximately 2 cm, the circuit is closed. The control unit evaluates this as an alarm. The optimum mounting location is the centre of your door or window frame. It is also possible to fit the detector to the bottom of the window frame if a particular window with a secured magnetic contact is to be tilted. The detector is suitable for both surface and flush mounting. - Switching power max. 5 W - Switching current max. 100 mA - Switching voltage max. 100 V/DC - 5 m connection cable, LIYY - Dimensions (L x W x H): 12 x 12 x 48 mm (with surface mount housing) - 8 x 20 mm (as fitted version) https://elecena.pl/product/18537604/mk2000w-opening-detector-normally-open-switch-contact-2-core-white 2021-05-21 https://elecena.pl/product/18537604/mk2000w-opening-detector-normally-open-switch-contact-2-core-white 2022-05-03