Abstract: A bracket for deterring the theft of smoke alarms attached to the surface of a room, such as the ceiling. The bracket includes two rigid metal strips coupled together by a hinge. One of the strips attaches to the wall behind the smoke alarm. Preferably, the screws holding the smoke alarm to the wall pass through holes in this part of the bracket and hold it between the wall and the alarm. After the attachment of the first strip to the wall, the second part of the bracket may then swing over the smoke alarm and connect up to the first with a lock. The lock, typically actuated by a key, deters or prevents the unauthorized separation of the bracket's parts. Hence, it limits access into the alarm itself, required to unfasten the screws holding it to the wall. Typically, the cover of the smoke alarm has two portions engaging each other, with one fitting inside the other. The bracket prevents the two halves of the cover from disengaging to allow access to the screws on the inside.