Extech Mini Anemometer Thermo with Humidity 45158

Extech Mini Anemometer Thermo with Humidity 45158

Extech 45158 Mini Anemometer Thermo with Humidity

Compact, Waterproof Environmental Meter for Air, Temperature & Humidity Monitoring

The Extech 45158 is a rugged, pocket-sized Mini Thermo-Anemometer that offers precise and convenient measurements of air velocity, temperature, wind chill, humidity, and dew point. Designed for both indoor and outdoor use, this waterproof device features a folding, extendable body for improved reach, and supports simultaneous display of air velocity with either temperature or wind chill.

Ideal for HVAC technicians, outdoor enthusiasts, and environmental professionals, this versatile tool is tripod mountable, CE certified, and includes practical features such as selectable averaging times, data hold, and automatic power-off.

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Key Features Extech Mini Anemometer Thermo with Humidity 45158

• Measures air velocity, air temperature, wind chill, dew point, and relative humidity

• Simultaneous dual display of air velocity + temperature or wind chill

• Selectable averaging intervals of 5, 10, or 13 seconds

• Auto power-off and data hold functions to conserve battery and freeze readings

• Waterproof construction ideal for field environments

• Extendable housing folds out to 229 mm (9 inches) for better access

• Tripod mountable for hands-free operation

• Comes with battery and 43-inch (109.2 cm) lanyard for convenient portability

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Measurement Ranges & Accuracy

• Air Velocity:

  • 1.1 to 20 m/s (±3% + 0.2 m/s), resolution: 0.1 m/s

  • 2.5 to 44.7 mph (±3% + 0.4 mph), resolution: 0.2 mph

  • 4.0 to 72.0 km/h (±3% + 1.4 km/h), resolution: 0.7 km/h

  • 2.1 to 38.9 knots (±3% + 0.6 knots), resolution: 0.3 knots

  • 216 to 3936 ft/min (±3% + 40 ft/min), resolution: 20 ft/min

• Beaufort Wind Force: 1 to 8 BF, accuracy ±1 BF

• Air Temperature: 0 to 122 °F (–18 to 50 °C), accuracy ±1.8 °F / ±1 °C, resolution: 0.1 °F/°C

• Relative Humidity: 10% to 95%, accuracy ±5%, resolution: 1%

• Dew Point: 32 °F to 122 °F (0 to 50 °C), accuracy ±3.6 °F / ±2 °C, resolution: 0.1 °F/°C

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Physical Specifications

• Display: Segment LCD

• Power Supply: 1 × CR2032 (3V) lithium battery (included)

• Vane Diameter: 1 inch (24 mm)

• Product Dimensions: 133 × 70 × 19 mm (5.25 × 2.75 × 0.75 in)

• Extended Length: 229 mm (9 in)

• Weight: 95 g (3 oz)

• Certifications: CE

• Warranty: 2 years

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Summary

 is a reliable, handheld solution for accurately monitoring air velocity, temperature, humidity, and wind-related measurements in real time. With its waterproof and portable design, extended reach, and dual-function display, it’s an excellent tool for professionals and hobbyists who need fast, field-ready environmental data. Ideal for HVAC, weather monitoring, or outdoor safety assessments, it packs a wide range of capabilities into a compact, user-friendly device.