Extech Environmental Quality Meter – EN300

In stock

The environmental quality meter measures humidity, temperature, air velocity, light and sound. Great for environmental testing at home, at the office or in the field.

Extech Environmental Quality Meter – EN300

Measures humidity, temperature, air velocity, light and sound


  • Characters on display reverse direction depending on Hygro-Thermo-Anemometer or Light-Sound Mode
  • Built-in low friction vane wheel improves air velocity accuracy
  • Thin-film capacitance humidity sensor built-in for fast response
  • Thermistor for ambient temperature and Type K input for taking surface temperature up to 2372° (1300°C)
  • Utilizes precision photo diode and correction filter
  • Sound level measurement meets IEC 61672 class 2
  • Max/Min and Data Hold
  • Complete with built-in sensors, Vane wheel, windscreen, Type K thermocouple probe, pouch case, and six 1.5V AAA batteries

This is a great meter for an all around environmental quality test. Whether its humidity, temperature, air velocity, light or sound this meter does them all. People work better in certain conditions with comfortable humidity and temperature levels. It is also good to know if sound levels exceed zoning standards and whether a work site is in an unsafe wind velocity.

The light meter attachment is great for testing the light intensity in agricultural areas. Greenhouses can cut down on the amount of light absorbed by plants, and this meter can provide exact estimates of light lost. A great over all environmental measurement tool with a multitude of applications at home, at the office or in the field. The EN300 Environmental Quality Meter User Manual is attached to this page to answer any additional questions.


  • Air velocity:
    • ft/min: 80 to 5910 ft/min
    • m/s: 0.4 to 30m/s
    • km/h: 1.4 to 108km/h
    • MPH: 0.9 to 67MPH
    • Knots: 0.8 to 58.3 knots
  • Light:
    • Foot Candles: 0 to 1860Fc
    • Lux: 0 to 20,000Lux
  • Relative Humidity: 10 to 95%RH
  • Temperature:
    • Thermistor: 32 to 122°F (0 to 50°C)
    • Type K: -148 to 2372°F (-100 to 1300°C)
  • Sound:
    • dB: 35 to 130dB
    • Frequency: 31.5 to 8,000Hz
    • Weighting/Response: A weighting/fast response
  • Power: 6 x AAA batteries
  • Dimensions:
    • Meter: 9.8 x 2.8 x 1.3" (248 x 70 x 34mm)
    • Vane: 1.2" (31mm)
  • Weight: 11.8oz (335g)

Unit Ship Weight: 1.5 lbs

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