Decora PIR occupancy sensor wall switch converts standard indoor switch to motion sensing unit for use in mid sized areas such as kitchen, bedrooms, and home offices. Passive infrared (PIR) sensor detects large and small movement. Ambient light override prevents device from switching lights On when there is ample natural sunlight. Includes manual override for use as a standard On Off switch. Adjustable delayed Off time interval (15 seconds to 15 minutes). Fits into standard wall box; gangable. Wall plate included. Rating: 500W incandescent, 400VA fluorescent, 120V AC rapid start magnetic only, 1 8 HP motor at 120V AC. UL listed, CSA Certified. 400 sq. ft. coverage. Conforms to California Title 24 Energy Code. Does not work with CFL bulbs. No. R01 PR150 1L1: Ivory, residential grade, single pole, 150 field of view No. R22 PR150 1LW: White, residential grade, single pole, 150 field of view No. R21 PR180 1LI: Ivory, residential commercial grade, single pole, 3 way, 180 field of view No. R22 PR180 1LW: White, residential commercial grade, single pole, 3 way, 180 field of view