The TES 1335 Digital light meter can measure light levels up to 400000 Lux / 40000 fc. 

Features

• Spectral Sensitivity close to CIE photopic Curve.
• Measuring levels ranging 0 to 400,000 Lux, 0 to 40, 000 fc.
• Relative function.
• Cosine Angular corrected.
• Auto Power Off function.
• CNS 5119 Class II
• Peak Hold function.
• Accurate and Instant response.
• Data Hold function.
• MAX/MIN function.

Specs

• Display: 3-3/4 digit LCD with high speed 42 segment bargraph.
• Measuring Range: 40.00 lux, 400.0 lux, 4000 lux, 40.00 Klux and 200.0 klux / 40.00 fc, 400.0 fc, 4000 fc, 20.00 Kfc.
  Note : 1fc=10.76Lux , 1Klux=1000Lux , 1Kfc=1000fc
• Overrange Display: LCD will show "OL" symbol.
• Spectral Response : CIE Photopic. (CIE human eye response curve).
• Spectral Accuracy : CIE function f '1 <= 6%
• Accuracy: ± 3%rdg ± 0.5% f.s. ( ± 4% rdg± 10 dgts as > 10,000 lux/fc range. (calibrated to standard incandescent lamp at color temperature 2856 K).
• Repeatability: ± 2%.
• Temperature Characteristics: ± 0.1%/ºC.
• Sampling Rate : 13.3 times/sec of analong bar-grahp indication ; 1.3 times/sec of digital display.
• Photo Detector: One silicon photo diode and spectral response filter.
• Operating Temperature & Humidity: 0ºC to 40ºC(32ºF) to 104ºF))& 0% to 80% RH.
• Storage Temperature and Humidity: -10ºC to 50ºC( 14ºFto 140ºF))& 0% to 70% RH.
• Power Source: 6 pcs size AAA battery.
• Battery life ( typical ): 400 hours ( carbon zine ).
• Photo detector Lead Length: 150 cm ( approx. ).
• Photo detector Dimensions: 92L× 60W× 29H (mm);
• Meter Dimensions: 150L× 72W× 35H (mm);
• Weight: 320g .