burglar alarm equipment banacari offices and similar, comprising a door rotating racks, uni directional, motorized, antiostaggio.where the operational function is obtained with panels of material bulletproof de end of triangular prisms (or similar) that connect the cruise (less than the base of the door) with thathigher (piano cover) the said door controlled by a detector of the masses that the blocks when a person armed or with means for entering or perforanto entangled in path controlled