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Extech HD400
Heavy Duty Light Meter

  • Wide range to 40,000Fc or 400,000 Lux
  • Cosine and color corrected measurements
  • Utilizes precision silicon photo diode and spectral
    response filter
  • Peak mode (10µS) captures highest reading
  • Relative mode indicates change in light levels
  • Min/Max and Data Hold
  • Large backlit LCD display with 40-segment bar graph
  • Heavy Duty rugged double molded housing
  • Built-in USB port
  • Includes light sensor with 3ft (1m) cable and protective cover, Windows® compatible software with USB cable, hard carrying case, and 9V battery
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Extech HD400 shown

Product Information
Datasheet 274 KB
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Ordering Information
Model Description Buy Online Price
HD400 Extech HD400 Heavy Duty Light Meter Buy Now $219.99
HD400-NIST Extech HD400-NIST Heavy Duty Light Meter with NIST Certificate Buy Now $344.99
Included Accessories
  • (1) Light sensor with 3ft (1m) cable
  • (1) Protective cover
  • (1) Windows® compatible software
  • (1) USB Cable
  • (1) 9V batteries
  • (1) Hard carrying case

*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.