The Hubbell ATP1500C ceiling sensor features a wide view lens for large areas with multiple occupants. The sensor features adaptive and passive infrared technology with a 1500 sqft max sensing range. It comes with an infrared masking kit which can be used to reduce the coverage area. Hubbell Incorporated, with a history dating back to 1888, began a series of acquisitions of prominent lighting businesses in 1963 that ultimately constituted Hubbell Lighting, Inc. In 2002, Hubbell acquired Lighting Corporation of America in one of the largest acquisitions in the history of the lighting industry, transforming Hubbell Lighting into one of the largest lighting manufacturers in North America.