For more information videos and installation guides on the dsc alexor alarm system click herefor the alexor brand store the unique dsc alexor vanishing door or window contact is truly tiny its the smallest wireless contact on the market today and is thinner than a 1 coin at only 48mm thick it can be sunk into window and door frames meaning that it is totally out of view and unobtrusive although the size of this tiny contact is just 57 mm x 254 mm x 48 mm it still has a 100m indoor ra