Dimensions:162(L)x60(W)x32 (H) mmHigh precision. Measurement range (1??200000Lux)Power Supply: 2 Pieces AAA batteries??(Not included).Net Weight: 110gAutomatic measuring level selectionMax and min reading hold functionLUX/FC unit selectionRedding locked holdAutomatic data recordingSpecification:Display: 3-1/2 digit LCD with a maximum reading of 1999.Measuring range: 2000/20000/200000 Lux.Spectral response: CIE Photonic. (CIE human eye response curve).Repeatability:?Ħ2%Accuracy:?Ħ 4% ?Ħ10dgts(<10000Lux) ?Ħ 5% ?Ħ10dgts(>10000Lux).Temperature characteristic:?Ħ0.1%/?C.Measuring rate: Approximately 2.0 time/sec.Photo detector: One silicon photo diode with filter.