Sporting a pocket-size footprint, the OVO enclosures boast of an advanced ergonomic design that offers comfortable handling and operation. The enclosures are available in two sizes: 3.76" x 2" x 0.68" and 4.89" x 2.61" x 0.91". The top and base are molded from ABS material and are assembled via two self-tapping screws. A recessed section on the top accommodates a membrane keypad. The larger of the two enclosures can be ordered with a mounting hole in one end for an infrared LED. The tops and bases also include mounting pillars. The larger enclosure will accept two AA cells and the smaller has room for a 12V cell or a 3V round cell. TEKO ENCLOSURES INC., Bridgeville, PA. (800) 965-9872.