# Kestrel 3500 Weather Meter vs BTMETER BT-100APP Bluetooth Vane Anemometer: specs and price compared

A sourced, side-by-side comparison of the Kestrel 3500 Weather Meter (Kestrel) and BTMETER BT-100APP Bluetooth Vane Anemometer (BTMETER) among anemometers. BTMETER BT-100APP Bluetooth Vane Anemometer is the cheaper of the two at $30.99.

## Side by side

| Spec | Kestrel 3500 Weather Meter | BTMETER BT-100APP Bluetooth Vane Anemometer |
| --- | --- | --- |
| US price | $209 | $30.99 |
| Brand | Kestrel | BTMETER |
| Wind speed range ms | 0.6 to 40.0 m/s (1.3-89.5 mph); operational to 60.0 m/s | 0.3 to 30 m/s (0.67-67.1 mph) |
| Airflow cfm cmm | — | CFM = velocity (ft/min) x duct cross-sectional area (ft²), user-entered area |
| Velocity accuracy | Larger of ±3% of reading or 20 ft/min | ±5% of reading |
| Sensor type | Rotating vane (impeller) | 8-vane wheel with dual temperature sensors |
| Temperature range | -10 to 55 °C (14 to 131 °F), ±0.5 °C accuracy | -10 to 45 °C (14 to 113 °F), ±2 °C accuracy |
| Data hold logging | No built-in logging on base 3500 (shows current/max/min/avg); optional USB/RS-232 PC interface cable sold separately for one-way data transfer | Current/Max/Min/Average hold; Bluetooth live streaming to companion app (no onboard SD logging) |
| Backlit display | Yes | Yes |

## Key differences

- Wind speed range ms: Kestrel 3500 Weather Meter 0.6 to 40.0 m/s (1.3-89.5 mph); operational to 60.0 m/s vs BTMETER BT-100APP Bluetooth Vane Anemometer 0.3 to 30 m/s (0.67-67.1 mph)
- Velocity accuracy: Kestrel 3500 Weather Meter Larger of ±3% of reading or 20 ft/min vs BTMETER BT-100APP Bluetooth Vane Anemometer ±5% of reading
- Sensor type: Kestrel 3500 Weather Meter Rotating vane (impeller) vs BTMETER BT-100APP Bluetooth Vane Anemometer 8-vane wheel with dual temperature sensors
- Temperature range: Kestrel 3500 Weather Meter -10 to 55 °C (14 to 131 °F), ±0.5 °C accuracy vs BTMETER BT-100APP Bluetooth Vane Anemometer -10 to 45 °C (14 to 113 °F), ±2 °C accuracy
- Data hold logging: Kestrel 3500 Weather Meter No built-in logging on base 3500 (shows current/max/min/avg); optional USB/RS-232 PC interface cable sold separately for one-way data transfer vs BTMETER BT-100APP Bluetooth Vane Anemometer Current/Max/Min/Average hold; Bluetooth live streaming to companion app (no onboard SD logging)

## Sources

- Kestrel 3500 Weather Meter: https://kestrelinstruments.com/kestrel-3500-pocket-weather-meter (kestrelinstruments.com, verified 2026-08-09)
- BTMETER BT-100APP Bluetooth Vane Anemometer: https://www.btmeter-store.com/products/bt-meter100-vane-anemometer (btmeter-store.com, verified 2026-08-09)

Canonical: https://frontdeskreview.com/gear/anemometers/kestrel-3500-weather-meter-vs-btmeter-bt-100-app/
Cite: Per The Front Desk Review, Kestrel 3500 Weather Meter ($209) vs BTMETER BT-100APP Bluetooth Vane Anemometer ($30.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/anemometers/kestrel-3500-weather-meter-vs-btmeter-bt-100-app/
License: CC BY 4.0.