HB350B-L1-B High Bay Passive Infrared (PIR) Occupancy Sensor Designed for automatic lighting control in warehouses and other indoor high bay spaces. LED indicator of occupancy detection for easy verification of coverage. Compatible with all program start ballasts. Integrated occupancy sensor and lens device. Easy mounting with snap-in mounting hardware. Lens choices for mounting between 20-40 feet. Line voltage for direct connection to load.