Overview: Digital lux meter: measures the amount of light going into the sensor Precise & easy readout Spectral Sensitivity close to CIE photo pic Curve Cosine Angular corrected Tripod fixable Data Hold function High accuracy in measuring Low battery indicator Specifications: Display: 3 1/2 digit LCD Measuring Range: 200/2000/20000/200000 Lux 20000 lux-reading x 10; 200000 lux-reading x 100 Overrange Display: Highest digit of (1) is displayed Resolution: 0.1 Lux Accuracy: ± 3% rdg ± 0.5% f.s. (lt;10, 000 lux) ± 4% rdg ± 10dgts (gt;10, 000 lux) (calibrated to standard incandescent lamp, 2856 K) Repeatability: ±2% Temperature Characteristics: ±0.1% Measuring Rate: Approx. 2 times/sec. Operating Temperature amp; Humidity 0'C to 40'C lt; 80% R.H. Power source: 1 x 9V battery (sold separately) Dimension: 135mm (L) x 75mm (W) x 33mm (H) Net Weight: 250g Accessories: Carrying