LED STAIRWELL FIXTURE WITH MOTION SENSOR has a narrow, low-profile design with a smooth PMMA lens for even illumination with no glare and a durable body with knockouts on both ends. The built-in bi-level microwave motion sensor turns off the fixture automatically when no motion is detected. This fixture, with 120-277V and a 0-10V dimmable driver, also includes power and color-changing options, letting you set it to 3500K, 4000K or 5000K with a simple switch. A model with a built-in EM battery is also available. The EM battery provides 90 minutes of power in case of emergency.