The Wattstopper HBL2 is a 360-degree replacement lens for HB3 Series high bay occupancy sensors, optimized for low bay applications at 10 ft. mounting height with a 48 ft. diameter coverage area. The wide-angle pattern suits low-ceiling warehouses, storage areas, and industrial spaces where broad omnidirectional detection is required. Field-replaceable and compatible with HB3 Series sensor heads.