The Extech Easyview Wide-Range Light Meter measures up to 40,000 ft.-candles and 400,000lux with ?3% accuracy. Large LCD display with bargraph Data hold Min/Max/Relative function for zero or difference from reference value and peak hold to capture short light pulses down to 100?seconds Measures up to 40,000 ft.-candles and 400,000lux with ?3% accuracy Includes 6 AAA batteries, holster with built-in stand, light sensor, protective cover with 39in. coiled cable and carry case Model EA30