An electronics box for insertion into a wall box includes a housing having a top surface, a bottom surface, a rear surface, at least one side surface, and an intermediate surface disposed part way between the top surface and the bottom surface and extending inward from the at least one side surface. A chamfer surface is disposed between an edge of the bottom surface and an edge of the rear surface, and is disposed at a particular angle with the respect to the bottom surface and has a particular length. The particular angle and the particular length are selected such that the housing is able to be tilted and then inserted into the wall box with the chamfer surface clearing the wall box.