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 HBL1 Lens offers linear patterns best suited for high bay aisleway applications. The Fresnel lens is designed to detect walking motion when mounted at or around 40°. In optimal conditions, the lens has a 60° linear detection range. Identical to the HBL1, the HBL1M comes with opaque adhesive tape applied to the interior of the lens, cutting off 1/2 of the coverage pattern. This customized coverage is ideal for the beginning of aisle ways where cross traffic could be an issue.
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'.
Similar to the HBL3 Lens, the HBL4 offers 360°coverage, and is best suited for open areas and aisleways in high bay applications. The HBL4 is a multi-cell, multi-tier Fresnel lens offering a high density coverage pattern.The HBL4 is designed for mounting at heights between 20' to 40', with a coverage area up to 68' in diameter when mounted at 40'.
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