Cooper Controls OSW-P-0451-D347-V Greengate Dual-Level PIR Wall Switch Sensor, Ivory Finish Shut-off delay: adjustable 15 seconds to 30 minutes Coverage: 180 degrees; 450 square feet (137.16 square meters) Air-gap switch ensures no leakage current to load Mounting Plate Dimensions: 4.15 inches high by 1.94 inches wide (10.54 cm by 4.92 cm) NEMA WD7 Guide robotic method utilized to verify coverage patterns