2 in 1 DesignThe digital lux meter can measure environmental brightness and ambient temperature. Resolution: 0.1Lux / 0.01Fc, 0.1; Measuring speed: 2 times / second. High Precision 4% rdg 0.5% f.s (less 20,000 Lux; 2,000 FC) / 5% rdg 10 dgt (more than 20,000 Lux ; 2,000 FC) with LCD backlight. Temperature characteristic: 0.1% /. Wide Measuring Range and Application0.1 - 400,000 Lux / 0.01 - 40,000FC, light measuring devices for factories, cinemas, Schools, workstations, offices and other places require lighting testing. Multifunctional LCD backlight, Data storage, Fast response, Auto zero, Data hold and MAX/MIN hold switch, Low power consumption, Short rise and fall times. With these functions, you can measure more precisely and get more data you want. Additionally, you can also store data in the drive for viewing at any time. It can store 33 sets of data. Features Display: 3999 Ranges: 0.1 to 400,000 Lux; 1-40,000 FC Accuracy: 4%rdg 0.5%f.s (less than 10,000 Lux;1,000 FC) / 5%rdg 10dgt (more than 10,000 Lux;1,000FC) Repeatability: 2% Temperature characteristic: 1%C Photodetector type: silicon photodiode with filter Operating temperature: 32-104 degrees F (0-40 degrees C) Sampling rate: 2-3 times per second Note: This does not include other things, the color is based on the first picture and other pictures only show the effect Due to differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!