Model TA636A Measurement method: Integral type Range: 0.1~200,000 LUX / 0.01~20,000 FC Measuring range: 200 / 2,000 / 20,000 / 200,000 LUX; 20 / 200 / 2,000 / 20,000 FC Accuracy: (4% + 10 digits) calibrated under standard incandescent lamp at color temperature 2856K Resolution: LUX < 200: 0.1; LUX 200: 1 FC < 20: 0.01; 20 FC < 200: 0.1; FC 200: 1 Display: 4-digit, max reading 1999 Light sensor: Silicon photodiode with filter Sampling rate: 2 times per second Incident angle: 120 Repeated test deviation: 2% Spectral range: 400~700 nm Auto power off: 15 minutes (can be disabled) Operating environment: -10C to 50C, max 80% RH, indoor altitude < 2000m Storage environment: -10C to 50C, max 70% RH (battery removed) Product dimensions: 150 x 56 x 28 mm Weight: Approx. 150g (battery not included) Power supply: 2 x 1.5V AAA (RO3/LR03) batteries Package includes: 1. Color box 2. Main unit 3. Cloth bag 4. Instruction manual 5. Protective cover