The luxometer can measure visible light produced by fluorescent lamps, metal halide lamps, high-voltage sodium lamps or incandescent electric lamps, and a variety of LED lighting sources. | Record peak, maximum, minimum, and relative values, perform conversion (Lux/Dc/DC), zero calibration. | Sampling rate: ≥2 times/sec. Sensor: Silicon photoelectric diode. Measured spectral range: 320~730nm Measuring scales: Lux - 0~200000 / Fc - 0~20000 / CD 999900 | Different measuring units: DC 2000 0. LUX 20000 0. CD 99990 0. | Contents: Includes English and Spanish instruction manual and 1x 9V GLF22A 1604A battery (included)