• 45158
  • Manufacturer has 50 in stock
    This stock is typically available to ship in 3 - 5 working days.



  • Display Air Velocity and either Relative Humidity, Dew Point, Temperature or Windchill
  • Selectable averaging function of 5, 10, or 13 second intervals
  • Fold up protective housing extends to 9" (229mm) for better reach, Tripod mount
  • Data Hold with Auto power off
  • Water resistant housing floats

What's in the Box

  • Lithium battery (CR2032)
  • 43in (1.09m) lanyard


The Extech 45158 mini thermo-anemometer with humidity features a waterproof, pocket size design. Capable of measuring a number of factors, the Extech 45158 mini thermo-anemometer is a handy item for a number of applications. The Extech 45158 mini thermo-anemometer measures air velocity from 100 to 5500 ft/min (or equivalent) with an accuracy of ±3% of reading; temperatures from 0 to 122°F (-18 to 50°C) with an accuracy 1.8°F (1°C); relative humidity from 10 to 95% with an accuracy of ±4%; and dew point from 32° to 122°F with an accuracy of ±2%.

All data is displayed on the Extech 45158 mini thermo-anemometer's 9999 count LCD screen, which can display air velocity and either relative humidity, dew point, temperature or wind chill. Other features of the Extech 45158 mini thermo-anemometer include selectable averaging function of 5, 10 or 13 second intervals, tripod mount, data hold, auto power off, and water resistant housing that will float.