Abstract: A housing assembly includes a high-profile basic unit and low-profile expansion unit. The basic unit has a recessed portion on its upper surface and a pair of grooves respectively extending vertically along its opposite sidewalls. A pair of connecting members equal in length to the grooves of the basic unit are normally received into these grooves. The expansion unit is formed on its bottom surface with a base portion and a pair of grooves respectively extending vertically along its opposite sidewalls. The base portion of the expansion unit is engageable into the recessed portion of the basic unit. The grooves of both basic and expansion units have an equal width. A pair of vanity members equal in length to the grooves of the expansion unit are normally fitted into these grooves.

Abstract: The structure of an outdoor communication device includes a device body and a mounting base. The device body includes a device body, a disk-like mounting portion, a plurality of units, and a cylindrical cover. The units are enclosed in rectangular parallelepiped cases and are stacked and mounted on the mounting portion and serve to separately store electrical circuits for driving the device. The cylindrical cover has an opening portion on one end face side and serves to store the stacked units. The opening portion is fixed to the mounting portion. The mounting portion is detachably mounted on the mounting base such that the device body is suspended from and fixed to the mounting base with the mounting base being located above the device body. Fixing members are used to fix the units while the units are stacked on the mounting portion, such that the units are stacked substantially in a form of a cross.