40 ft. Wide Angle, Dual Element,up to 16 ft. Ceiling, "Snap In Base", N/O N/C - Selectable, 10.5 to 28VDC The PA-6800 series ceiling mount indoor PIR sensors combine a discreet compact appearance with outstanding performance at a low price. The sensor can be snapped in and out of the detachable base unit for easy installation in high places.Features: