Patent ID: 8857716

Claim:
An apparatus, the apparatus comprising: a bracket for attaching a housing to a building material, wherein the bracket comprises an annular shape and a plurality of structures protrude from the inner circumference of the bracket, the structures having a first shape; an aiming annulus for aiming the housing, wherein the aiming annulus comprises an extruded annulus having a first and second annular plane at opposite ends of the aiming annulus, wherein the first annular plane is non-parallel with the second annular plane, wherein protruding from the inner circumference of the aiming annulus are a plurality of structures having the first shape, wherein extending beyond the first annular plane are a plurality of structures having a second shape, the structures of the aiming annulus having the second shape capable of interacting with the structures of the first shape on one or more of the bracket and another aiming annulus in order to join the aiming annulus to one or more of the other aiming annulus and the bracket; and the housing for enclosing electronics, the housing comprising a first exterior surface, structures comprising the second shape protrude from the first exterior surface, the structures of the housing having the second shape and capable of interacting with the structures of the first shape on one or more of the bracket and the aiming annulus in order to join the housing to one or more of the aiming annulus and the bracket.