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Extech 45170: Hygro-Thermo-Anemometer-Light Meter

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Extech Rugged 4-in-1 Environmental Meter Measures Humidity, Temperature, Air Velocity and Light

Availability: In stock




  • Ergonomic pocket size housing with large dual LCD simultaneous display of Temperature and Air Velocity or Relative Humidity
  • Characters on display reverse direction depending on Hygro-Thermo-Anemometer or Light Mode
  • Data Hold to freeze the displayed value
  • Records Min/Max readings
  • Built-in low friction vane wheel improves accuracy of air velocity in ft/min, MPH, m/s, km/h, and Knots
  • Built-in precision thin-film capacitance humidity sensor for fast response
  • Built in thermistor for ambient temperature measurements
  • Type K input measures temperature to 2372° (1300°C) using optional Type K probe
  • Utilizes precision photo diode and color correction filter
  • Cosine and color corrected light measurements
  • Defaults to last function when powered off
  • Auto power off 10 minutes after last key is pressed with disable feature
  • Low Battery and overrange indication
  • Complete with built-in Humidity sensor, Light sensor and Vane wheel, wrist strap, and 9V battery. (Optional Type K thermocouple probe)

Additional Info

Additional Info

Model MS-EX45170
Set Product as New to Date No
Measurement Range Resolution Accuracy
MPH (Miles per hour)  0.9 to 67.0 MPH  0.1 MPH
km/hr (kilometers per hour)  1.4 to 108.0 km/h  0.1 km/h
 ≤ 3937 ft/min: ±3% F.S.
Knots (nautical miles per hour)  0.8 to 58.3 knots  0.1 knots
 > 3937 ft/min: ±4% F.S
m/sec (meters per second)  0.4 to 30.0 m/s  0.1 m/s
ft/min (feet per minute)  80 to 5910 ft/min  1ft/min  
Temperature/Thermistor  32 to 122°F (-0 to 50°C)  0.1 °F/C  ± 2.5 °F (± 1.2 °C)
Temperature /Thermocouple  -148 to 2372°F  0.1°F  ± (1% + 2°F)
 -100 to 1300°C  0.1°C  ± (1% + 1°C)
Relative Humidity  10.0 to 95.0% 0.1%
 ±4% RH (from 10% to 70% RH)
 ±4% rdg +1.2% RH (> 70% RH)
Light (Auto Ranging)  0 to 2,200 Lux  1 Lux
 ±5% rdg +8 digits
 1,800 to 20,000 Lux  10 Lux
 0 to 204.0 Fc  0.1 Fc
 170 to 1,860 Fc  1 Fc
Display 4 digit (9999 count) Dual Display LCD
Sensors Thin film capacitance humidity sensor
Min/Max Min/Max recalls the highest/lowest reading
Data Hold Data Hold freezes the display
Operating conditions 0 to 50 °C (32 to 122 °F) / < 80% RH
Power supply 9 Volt Battery
Dimensions / Weight Instrument: 156 x 60 x 33mm( 6.14 x 2.36 x 1.29”) Vane: 24mm ( 1”) diameter / 160 g (5.7 oz)
Clamp Meter Type N/A
Manufacturer Warranty 1 Year
Mfr. Model # 45170
Usually Ships 3 to 5 days
Standards CE Approved


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