The High Bay (HB) Occupancy Sensor Modules (sold separately) require one of four available lenses to operate: the HBL1, HBL1M, HBL3 or HBL4. Each Fresnel lens is designed for a different application, allowing for use at different mounting heights and locations. Each HB sensor lens snapmounts to any module, and can be interchanged by simply un-snapping and re-snapping the ideal lens for the particular application. They can also be repositioned 90.. on the sensor. The HBL3 Lens offers 360.. coverage and is best suited for open area and aisleway coverage in high bay applications. The HBL3 is a multi-cell, multitier Fresnel lens offering a high density coverage pattern that spreads over a 24... diameter area at a height of 20....
