# REED R4000SD Data Logging Vane Thermo-Anemometer vs Proster Handheld Digital Anemometer: specs and price compared

A sourced, side-by-side comparison of the REED R4000SD Data Logging Vane Thermo-Anemometer (REED Instruments) and Proster Handheld Digital Anemometer (Proster) among anemometers.

## Side by side

| Spec | REED R4000SD Data Logging Vane Thermo-Anemometer | Proster Handheld Digital Anemometer |
| --- | --- | --- |
| US price | not published | $33.67 |
| Brand | REED Instruments | Proster |
| 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 |

## Key differences

- 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

## Sources

- REED R4000SD Data Logging Vane Thermo-Anemometer: https://www.reedinstruments.com/product/reed-r4000sd-data-logging-vane-thermo-anemometer (reedinstruments.com, verified 2026-08-09)
- Proster Handheld Digital Anemometer: https://www.ebay.com/itm/358241845889 (ebay.com, verified 2026-08-09)

Canonical: https://frontdeskreview.com/gear/anemometers/reed-r4000sd-vs-proster-handheld-anemometer/
Cite: Per The Front Desk Review, REED R4000SD Data Logging Vane Thermo-Anemometer (not published) vs Proster Handheld Digital Anemometer ($33.67) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/anemometers/reed-r4000sd-vs-proster-handheld-anemometer/
License: CC BY 4.0.