# Extech 45158 Mini Thermo-Anemometer with Humidity vs UNI-T UT363 Wind Speed and Temperature Meter: specs and price compared

A sourced, side-by-side comparison of the Extech 45158 Mini Thermo-Anemometer with Humidity (Extech Instruments) and UNI-T UT363 Wind Speed and Temperature Meter (UNI-T) among anemometers.

## Side by side

| Spec | Extech 45158 Mini Thermo-Anemometer with Humidity | UNI-T UT363 Wind Speed and Temperature Meter |
| --- | --- | --- |
| US price | not published | not published |
| Brand | Extech Instruments | UNI-T |
| Wind speed range ms | 1.1 to 20 m/s (2.5-44.7 mph) | 0 to 30 m/s |
| Airflow cfm cmm | — | — |
| Velocity accuracy | ±(3% of reading + 0.4 mph) | ±(5% of reading + 0.5 digit) |
| Sensor type | Vane, 1 in. (24mm) diameter | Fixed rotating-vane head, typical of the UT36x series (not explicitly named on the manufacturer spec sheet) |
| Temperature range | -18 to 50 °C (0 to 122 °F), ±1 °C accuracy | -10 to 50 °C (14 to 122 °F), ±2 °C / ±4 °F accuracy |
| Data hold logging | Data hold; selectable 5/10/13-second averaging (no onboard SD/USB logging) | Data hold only; no onboard logging (the separate UT363BT variant adds Bluetooth transmission to the iENV app, still no SD storage) |
| Backlit display | Yes | Yes |

## Key differences

- Wind speed range ms: Extech 45158 Mini Thermo-Anemometer with Humidity 1.1 to 20 m/s (2.5-44.7 mph) vs UNI-T UT363 Wind Speed and Temperature Meter 0 to 30 m/s
- Velocity accuracy: Extech 45158 Mini Thermo-Anemometer with Humidity ±(3% of reading + 0.4 mph) vs UNI-T UT363 Wind Speed and Temperature Meter ±(5% of reading + 0.5 digit)
- Sensor type: Extech 45158 Mini Thermo-Anemometer with Humidity Vane, 1 in. (24mm) diameter vs UNI-T UT363 Wind Speed and Temperature Meter Fixed rotating-vane head, typical of the UT36x series (not explicitly named on the manufacturer spec sheet)
- Temperature range: Extech 45158 Mini Thermo-Anemometer with Humidity -18 to 50 °C (0 to 122 °F), ±1 °C accuracy vs UNI-T UT363 Wind Speed and Temperature Meter -10 to 50 °C (14 to 122 °F), ±2 °C / ±4 °F accuracy
- Data hold logging: Extech 45158 Mini Thermo-Anemometer with Humidity Data hold; selectable 5/10/13-second averaging (no onboard SD/USB logging) vs UNI-T UT363 Wind Speed and Temperature Meter Data hold only; no onboard logging (the separate UT363BT variant adds Bluetooth transmission to the iENV app, still no SD storage)

## Sources

- Extech 45158 Mini Thermo-Anemometer with Humidity: https://www.extech.com/products/45158 (extech.com, verified 2026-08-09)
- UNI-T UT363 Wind Speed and Temperature Meter: https://meters.uni-trend.com/product/ut363/ (meters.uni-trend.com, verified 2026-08-09)

Canonical: https://frontdeskreview.com/gear/anemometers/extech-45158-vs-uni-t-ut363/
Cite: Per The Front Desk Review, Extech 45158 Mini Thermo-Anemometer with Humidity (not published) vs UNI-T UT363 Wind Speed and Temperature Meter (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/anemometers/extech-45158-vs-uni-t-ut363/
License: CC BY 4.0.