About This STABLE, ACCURATE READINGS: Provides reliable lux measurements for light level monitoring in various environments, including industrial, commercial, and residential spaces. LARGE LCD DISPLAY: Features an extra-large ⅞" high LCD display for easy-to-read light measurements, with low battery and over-range indicators. C.I.E. PHOTOPIC SPECTRUM: Color and cosine corrected sensor meets the C.I.E. photopic spectrum, ensuring accurate readings for all light types, including LED. EXTERNAL ZERO ADJUSTMENT: Includes a convenient external zero adjustment and hold function to maintain readings for easy comparison and analysis. PORTABLE & EASY TO USE: Comes with a soft padded case, shoulder strap, detachable sensor with cover, tripod mounting screw, and a 9V battery for portability and quick setup. 5 YEAR WARRANTY: We stand behind the quality of our products and offer a 5 year manufacturer warranty.