Testo
testo 405i Smart Probe Thermal Anemometer
$123.95
Best Anemometers · head-to-head
testo 405i Smart Probe Thermal Anemometer 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
$33.67Cheaper
Which is better: the testo 405i Smart Probe Thermal Anemometer or Proster Handheld Digital Anemometer?
On the specs we track, they're closely matched. The Proster Handheld Digital Anemometer is the cheaper at $33.67.
See testo 405i Smart Probe Thermal Anemometer on Amazon See Proster Handheld Digital Anemometer on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | testo 405i Smart Probe Thermal Anemometer | Proster Handheld Digital Anemometer |
|---|---|---|
| US price | $123.95 | $33.67 |
| Brand | Testo | Proster |
| Released | — | — |
| Wind speed range ms | 0 to 30 m/s | 0.4 to 30 m/s (80-5900 ft/min) |
| Airflow cfm cmm | — | 0 to 99990 CFM and CMM |
| Velocity accuracy | ±(0.1 m/s + 5% of reading) below 2 m/s; ±(0.3 m/s + 5% of reading) 2-15 m/s | — |
| Sensor type | Hot-wire (thermal), foldable telescopic probe | Rotating vane |
| Temperature range | 0 to 50 °C (32 to 122 °F) | Displays temperature and wind chill, including sub-0°C readings; exact range not stated in surfaced sources |
| Data hold logging | Hold/min/max/logging via Bluetooth-paired testo Smart App; no onboard display | Reading hold; max/min for handheld or fixed measurement; no onboard logging |
| Backlit display | No | Yes |
Sources — testo 405i Smart Probe Thermal Anemometer: testo.com (verified 2026-08-09). Proster Handheld Digital Anemometer: ebay.com (verified 2026-08-09).
What's the difference between the testo 405i Smart Probe Thermal Anemometer and Proster Handheld Digital Anemometer?
Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.
- Wind speed range ms: testo 405i Smart Probe Thermal Anemometer 0 to 30 m/s vs Proster Handheld Digital Anemometer 0.4 to 30 m/s (80-5900 ft/min)
- Sensor type: testo 405i Smart Probe Thermal Anemometer Hot-wire (thermal), foldable telescopic probe vs Proster Handheld Digital Anemometer Rotating vane
- Temperature range: testo 405i Smart Probe Thermal Anemometer 0 to 50 °C (32 to 122 °F) 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: testo 405i Smart Probe Thermal Anemometer Hold/min/max/logging via Bluetooth-paired testo Smart App; no onboard display vs Proster Handheld Digital Anemometer Reading hold; max/min for handheld or fixed measurement; no onboard logging
- Backlit display: testo 405i Smart Probe Thermal Anemometer false vs Proster Handheld Digital Anemometer true