WattStopper’s CI-24 ceiling mount passive infrared occupancy sensor reduces energy waste in unoccupied building spaces by communicating occupancy to EMS and HVAC systems. Detection Signature Analysis eliminates false triggers; provides immunity to RFI and EMI. Digital time delay adjustment from 30 seconds to 30 minutes. Two levels of sensitivity (minimum or maximum) are selectable through the DIP switch. Multi-level Fresnel lens for superior desktop detection. LED indicates occupancy detection. Qualifies for ARRA-funded public works projects.