HI 97500 Portable Lux Meter

Range 0.001 to 1.999 Klux; 0.01 to 19.99 Klux; 0.1 to 199.9 Klux Resolution 0.001 Klux; 0.01 Klux; 0.1 Klux Accuracy ± 6% of reading ± 2 digits Sensors human-eye-response silicon photodiode with 1.5 m coaxial cable ( fixed) Battery Type / Life 9V / approximately 200 hours of continuous use; auto-off after 7 minutes of non-use Environment 0 to 50° C ( 32 to 122° F) ; RH max 100% Dimensions 164 x 76 x 45 mm ( 6.5 x 3.0 x 1.8" ) Weight 180 g ( 6.3 oz.)