More Information Product Name: LIGHT METER DATALOGGER 400.000 LUX PRO Brand: KRISBOW Type: Pro Series Benefit 1 year warranty Data logging can be carried out, no need to have a person present Data logging is more accurate because there is no human error Features C.I.E standard illuminate A (2856K) Datalogger function (99 readings) USB Interface to PC Easy to use, fast and accurate measurement Selectable unit Fc or Lux Low battery indication 4 digits LCD with analog bar Max amp; Min measurement Silicon photo diode sensor with a spectral response filter fully cosine corrected Specification Measuring Range: 400, 4K, 40K, 400K Lux / 40, 400, 4K, 40K Fc Note: 1Fc = 10.76 Lux Resolution: 0.1 Lux or 0.01 Fc Accuracy: ± 3% ± 0.5fs. ( lt;10,000 Lux) / ± 4% ± 10d ( gt;10,000 Lux) Over Range Indication: âOLâ icon Measuring Rate: 1.3 times / second Repeatability: +/- 3% Power supply: 9V battery Cable Length of Light Sensor: 107 cm Light Sensor Dimension: 115 x 60 x 35 mm