The Motion Detector is a surface-mounted, wired, passive infrared motion detector designed for wall-to-wall coverage across a wide temperature range. When wall-mounted around 10 feet (3 meters) high, Motion Detector covers a cone-shaped area with a maximum span of about 60 feet (18.2 m) and a maximum range of about 50 feet (15.2 meters). The Motion Detector includes an external power supply and attaches to one of the eight digital inputs on the RIM-750.