Extech Instruments
Extech 45158 Mini Thermo-Anemometer with Humidity
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Best Anemometers · head-to-head
Extech 45158 Mini Thermo-Anemometer with Humidity vs Proster Handheld Digital Anemometer
A sourced, side-by-side comparison. Proster Handheld Digital Anemometer is cheaper at $33.67. Every spec and price links to its source.
Proster
Proster Handheld Digital Anemometer
$33.67
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Extech 45158 Mini Thermo-Anemometer with Humidity | Proster Handheld Digital Anemometer |
|---|---|---|
| US price | — | $33.67 |
| Brand | Extech Instruments | Proster |
| Released | — | — |
| Wind speed range ms | 1.1 to 20 m/s (2.5-44.7 mph) | 0.4 to 30 m/s (80-5900 ft/min) |
| Airflow cfm cmm | — | 0 to 99990 CFM and CMM |
| Velocity accuracy | ±(3% of reading + 0.4 mph) | — |
| Sensor type | Vane, 1 in. (24mm) diameter | Rotating vane |
| Temperature range | -18 to 50 °C (0 to 122 °F), ±1 °C accuracy | Displays temperature and wind chill, including sub-0°C readings; exact range not stated in surfaced sources |
| Data hold logging | Data hold; selectable 5/10/13-second averaging (no onboard SD/USB logging) | Reading hold; max/min for handheld or fixed measurement; no onboard logging |
| Backlit display | Yes | Yes |
Sources — Extech 45158 Mini Thermo-Anemometer with Humidity: extech.com (verified 2026-08-09). Proster Handheld Digital Anemometer: ebay.com (verified 2026-08-09).
What's the difference between the Extech 45158 Mini Thermo-Anemometer with Humidity and Proster Handheld Digital Anemometer?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Wind speed range ms: Extech 45158 Mini Thermo-Anemometer with Humidity 1.1 to 20 m/s (2.5-44.7 mph) vs Proster Handheld Digital Anemometer 0.4 to 30 m/s (80-5900 ft/min)
- Sensor type: Extech 45158 Mini Thermo-Anemometer with Humidity Vane, 1 in. (24mm) diameter vs Proster Handheld Digital Anemometer Rotating vane
- Temperature range: Extech 45158 Mini Thermo-Anemometer with Humidity -18 to 50 °C (0 to 122 °F), ±1 °C accuracy vs Proster Handheld Digital Anemometer Displays temperature and wind chill, including sub-0°C readings; exact range not stated in surfaced sources
- Data hold logging: Extech 45158 Mini Thermo-Anemometer with Humidity Data hold; selectable 5/10/13-second averaging (no onboard SD/USB logging) vs Proster Handheld Digital Anemometer Reading hold; max/min for handheld or fixed measurement; no onboard logging