Features: Made from premium material, reliable and durable. The digital light meter uses a 9V battery(not included). Resolution: 0.1Lux / 0.01Fc; Accuracy:±4%; Measurement speed: 2 times/second. Hold function, Auto range & Manual range,Auto Power OFF: After approx.15 minutes Low power of battery detecting, operating environment: 14 to 122℉(-10 to 50℃), 10%-90%RH The digital light meter will allow you to measure the lighting in an area Specification: Condition: 100% Brand New Casing Material: Plastic Power supply: 1* 9V battery(Not included) Range:0.1 ~ 200000LUX, 0.01 ~ 20000fc Resolution: 0.1 Lux/0.01Fc Operating environment: 14 to 122℉(-10 to 50℃), 10%-90%RH Accuracy: ±4% Measuring speed: 2 times per second Size: approx.145*67*32mm /5.71*2.64*1.26in Package List: 1*Light Meter 1* User Manual 1、Low power of battery detecting, operating environment: 14 to 122℉(-10 to 50℃), 10%-90%RH 2、The digital light meter will allow you to measure the lighting in an area 3、The digital light meter uses a 9V battery(not included). 4、Resolution: 0.1Lux / 0.01Fc; Accuracy:±4%; Measurement speed: 2 times/second. 5、Hold function, Auto range & Manual range,Auto Power OFF: After approx.15 minutes