This digital photometer is the perfect for testing . It is suitable for library, mall, office, hotel, operating room, living-room, and etc. Measuring range : 1 Lux ~ 50,000Lux Sampling rate: 2.0 times / . Repeat the test : ± 2% Temperature characteristics : ± 0.1% / Accuracy : ± 4% ± 0.5% ( Greater than 10,000 Lux file accuracy ± 5% ± 10 words ) Battery life: about 200 hours of continuous use Working environment : 0 ~ 40 (32 ~ 104 ) 0 ~ 70% Rh Feature - ColorBlack - Material: plastic - Size: 11.5 x 6.5 x 2.5cm - Display: 3 ½ digit LCD display - Character height 18mm - Measuring range : 1 Lux ~ 50,000Lux - Sampling rate: 2.0 times / . - Repeat the test : ± 2% - Temperature features: ± 0.1% / Accuracy : ± 4% ± 0.5% ( Greater than 10,000 Lux file accuracy ± 5% ± 10 words ) - Battery life: about 200 hours of continuous use Working environment : 0 ~ 40 (32 ~ 104 ) 0 ~ 70% Rh - With a reading lock function, you can always lock the measured values. - Highly and low power consumption. - Powered by batteries (not included) and convenient to replace. Compact and portable design enables . - Suitable for library, mall, office, hotel, operating room, living-room, and etc. Package list: 1 meter