A device housing for signal devices that are to be placed on a premise of a user, the device housing encouraging access to certain connections and discouraging access to certain connections once the device housing is mounted to a mounting surface. The device housing includes a first housing portion defining a first cavity enclosing electrical components and a second housing portion defining a second cavity. The second housing portion adjoins the first housing portion. An adjoining wall separates the first cavity from the second cavity. An open side of the second cavity is positioned to extend along the mounting surface. At least one user connection is mounted to an external sidewall of the first housing portion, and at least one restricted connection is mounted to the adjoining wall. The restricted connection extends into the second cavity.