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REED Instruments
REED R4000SD Data Logging Vane Thermo-Anemometer
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Best Anemometers · head-to-head
REED R4000SD Data Logging Vane Thermo-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
$33.67
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | REED R4000SD Data Logging Vane Thermo-Anemometer | Proster Handheld Digital Anemometer |
|---|---|---|
| US price | — | $33.67 |
| Brand | REED Instruments | Proster |
| Released | — | — |
| Wind speed range ms | 0.4 to 30 m/s (79-5906 ft/min) | 0.4 to 30 m/s (80-5900 ft/min) |
| Airflow cfm cmm | — | 0 to 99990 CFM and CMM |
| Velocity accuracy | ±(2% of reading + 0.2 m/s / 40 ft/min) | — |
| Sensor type | Rotating vane, 72mm (2.8 in.) diameter, low-friction ball bearing | Rotating vane |
| Temperature range | 0 to 50 °C (32 to 122 °F) ambient probe; optional Type K (-100 to 1300 °C) / Type J (-100 to 1200 °C) thermocouple input | Displays temperature and wind chill, including sub-0°C readings; exact range not stated in surfaced sources |
| Data hold logging | Onboard SD-card datalogging up to 16GB, adjustable 1-3600 sec sampling interval | Reading hold; max/min for handheld or fixed measurement; no onboard logging |
| Backlit display | Yes | Yes |
Sources — REED R4000SD Data Logging Vane Thermo-Anemometer: reedinstruments.com (verified 2026-08-09). Proster Handheld Digital Anemometer: ebay.com (verified 2026-08-09).
What's the difference between the REED R4000SD Data Logging Vane Thermo-Anemometer 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: REED R4000SD Data Logging Vane Thermo-Anemometer 0.4 to 30 m/s (79-5906 ft/min) vs Proster Handheld Digital Anemometer 0.4 to 30 m/s (80-5900 ft/min)
- Sensor type: REED R4000SD Data Logging Vane Thermo-Anemometer Rotating vane, 72mm (2.8 in.) diameter, low-friction ball bearing vs Proster Handheld Digital Anemometer Rotating vane
- Temperature range: REED R4000SD Data Logging Vane Thermo-Anemometer 0 to 50 °C (32 to 122 °F) ambient probe; optional Type K (-100 to 1300 °C) / Type J (-100 to 1200 °C) thermocouple input 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: REED R4000SD Data Logging Vane Thermo-Anemometer Onboard SD-card datalogging up to 16GB, adjustable 1-3600 sec sampling interval vs Proster Handheld Digital Anemometer Reading hold; max/min for handheld or fixed measurement; no onboard logging