Dual technology low voltage ceiling sensor •Must use with PP-20 power pack. •Dual sensing technology ideal for areas with cubicles or other obstructions. •Mounts directly to ceiling tiles, no box needed. •5 year warranty. Made in the U.S.A. •Adjustable time delay from 30 seconds to 20 minutes. •Noise will reactivate the system for 10 seconds after lights have gone off. •360 degree coverage for up to 2,000 sqaure feet. •Green L.E.D. indicator light.