The FX-360 Ceiling Mount PIR installs more easily, provides a better detection area, and is less conspicuous than traditional wall mount detectors. This slim detector is less than 1.5" tall x 4.75" diameter and provides 25' - 40' pattern on 8' - 12' ceilings. FX-360 also features 62 detection zones, selectable pulse count and a durable hard plastic lens.