A digital light meter can measure ambient light and ambient temperature. Resolution : 0.1Lux/0.01Fc, 0.1; measuring speed: 2 times/second. 4% rdg 0.5% f.s (less than 20,000 Lux; 2,000 FC) / 5% rdg 10 dgt (over 20,000 Lux; 2,000 FC) with LCD backlight . Temperature characteristic: 0.1%/. 0.1 - 400,000 Lux / 0.01 - 40,000FC, used for light metering devices in factories, cinemas, schools, workstations, offices and others places where lighting tests are required. Backlit LCD display, data storage, fast response, auto zero, data hold and max/min hold switch, low power consumption, short rise and fall times. With these features, you can measure more accurately and get more data if needed. In addition, you can store data on disk for viewing at any time. Can store 33 sets of data. Features Display: 3999 Range: 0.1 to 400,000 lux; 1 to 40,000 FC Accuracy: 4% rdg 0.5% f.s (less than 10000 lux; 1000 FC) / 5% rdg 10 dgt (greater than 10000 lux; 1000 FC) Repeatability: 2% Temperature Specifications: 1%C Photodetector type: silicon photodiode with optical filter Working temperature: 32-104 degrees F (0-40 degrees C) Sampling Rate: 2-3 times per second Note: Nothing else is included here, the color depends on the first picture, other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item.