Extech 45158 Mini Thermo-Anemometer with Humidity

Extech 45158 Mini Thermo-Anemometer with Humidity


The Extech Mini Thermo-Anemometer with Humidity simultaneously displays air velocity and relative humidity.


  • Data hold to freeze most recent display
  • Measure Dew Point from 32 ̊F to 122 ̊F
  • Measures RH from 10% to 95%
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The Extech Mini Thermo-Anemometer with Humidity measures air velocity, temperature, and windchill with displays of temperature, relative humidity, and dew point. The water resistant housing floats and is drop tested to 6 feet. The averaging function is selectable with the interval set at 5, 10, or 13 seconds. The Mini-Thermo-Anemometer also features data hold and auto power off functions.

The anemometer can be folded up for easy storage or extended to 9 inches (229mm) for a better reach. Continuous sampling is available using the tripod mount.

Notable Specifications:
  • ft/min range: 100 TO 5550ft/min
  • ft/min resolution: 20ft/min
  • ft/min basic accuracy: ± (3%rdg + 40ft/min)
  • m/s range: 0.5 to 28m/s
  • m/s resolution :0.1m/s
  • m/s basic accuracy: ± (3%rdg _ 0.2m/s)
  • km/h range: 1.8 to 100.6 km/h
  • km/h resolution: 0.7km/h
  • km/h basic accuracy: ± (3%rdg + 1.4km/h)
  • MPH range: 1.1 to 62.5 MPH
  • MPH resolution: 0.2MPH
  • MPH basic accuracy: ± (3%rdg + 0.4MPH)
  • knots range: 1.0 to 54.3 knots
  • knots resolution: 0.3knots
  • knots basic accuracy: ± (3%rdg + 0.6knots)
  • Beaufort force range: 1 to 17 BF
  • Beaufort resolution: 1 to 17 BF
  • Beaufort basic accuracy: ±1BF
  • Temperature range: 0 to 122°F (-18 to 50°C)
  • Temperature resolution: 0.1°F/°C
  • Temperature basic accuracy: ±1.8°F/±1°C
  • Relative humidty range: 10% to 95%
  • Relative humidity resolution: 1%
  • Relative humidity basic accuracy: ±4%
  • Dew point range: 32°F to 122°F
  • Dew point resolution: 1°
  • Dew point basic accuracy: ±2%
  • Power: CR2032 lithium battery
  • Dimensions: 5.25 x 2.75 x 0.75" (133 x 70 x 19mm)
  • Vane: 1" (24mm) diameter
  • Weight: 3oz (95g)
What's Included:
  • (1) Thermo-anemometer
  • (1) CR2032 lithium battery
  • (1) 43" (1.09m) lanyard
Image Part # Product Description Price Stock Order
Extech 45158 Mini Thermo-Anemometer with Humidity 45158 Mini thermo-anemometer with humidity
Drop ships from manufacturer
Image Part # Product Description Price Stock Order
Extech 45156 Spare Mini Impeller Assembly 45156 Spare mini impeller assembly for 45158, 2-pack
In Stock
Extech TR100 Tripod TR100 Spare tripod (for meters with tripod mount feature)
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Extech Small Vinyl Carrying Case with Belt Loop CA895 Small vinyl carrying case with belt loop, ExStik series meters
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