1、It is a professional instrument for measuring luminosity and brightness, used for light measurement engineering, quality control, health prevention and various environmental light. 2、It is suitable for the measurement of light in factories, schools, offices, transportation routes and homes. 3、This meter has the function of automatic shutdown, the meter will automatically cut off the power with 5 minutes no operation to save battery loss. 4、Featuring digital display screen with backlight, cool and modernized, simple to operate and easy to read even in the dark. 5、Also features maximum and minimum value measurement function, automatic measurement function, data rise and fall in a short time and low voltage battery indication. Condition: 100% Brand New Item Type: Light Meter Material: ABS Measurement Range: 0Lx～200,000Lx/0Fc～185,806Fc Accuracy: ±3% rdg±0.5%f.s.(<10,000Lx) ±4% rdg±10dgts.(>10,000Lx) Digital Update: 2times/s Photometric Probe: Silicon Diode Battery Life: ≥60h Operating Temperature and Humidity: 0℃～ 40℃, 10%RH ～ 90%RH Storaqge Temperature and Humidity: -20℃～ 50℃, 10%RH ～ 90%RH Power Supply: 1 x 9V Battery(Not included) Size: Approx.52.5 x 35.5 x 166mm / 2 x 1.4 x 6.5in Weight: Approx. 153g / 5.4oz 1 x Light Meter 1 x Instruction