The Wattstopper HB350C-B is a cold-temperature PIR high bay base module rated for 120/277 VAC, designed for occupancy-based lighting control in industrial high bay environments with low ambient temperature requirements, and includes a back box (J-box) for ceiling or fixture-embedded mounting. Operating temperature range spans -40F to 131F, making it suitable for refrigerated warehouses and cold storage facilities; load rating is 1,200W at 277 VAC / 800W at 120 VAC with DIP-switch time delay (15 seconds to 30 minutes) and adjustable PIR sensitivity. UL listed and RoHS compliant with a 5-year warranty; compatible with all electronic ballasts and requires a separately ordered modular lens.