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The Testo 405i is a wireless instrument for measuring air flow velocity, temperature, and volume flow. The 405i is equipped with a telescopic shaft, which extends to 15” for easy in-duct testing.
The Testo 405i works with an App and Bluetooth so you can read it out on a smart phone or tablet. The Testo Smart Probes App allows users to remotely read measurements from up to six (6) Smart Probes, and easily document and report the results. The app also features automatic calculations.
Temperature - NTC | |
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Measuring range | -4° to 140 °F / -20 to +60 °C |
Accuracy | ±0.9 °F / ±0.5 °C |
Resolution | 0.1 °F / 0.1 °C |
Velocity - Hot wire anemometer | |
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Measuring range | 0 to 5906 fpm / 0 to 30 m/s |
Accuracy | ±(19.7 fpm + 5 % of mv) (0 to 394 fpm) / ±(0.1 m/s + 5 % of mv) (0 to 2 m/s) ±(59.1 fpm + 5 % of mv) (394 to 2953 fpm) / ±(0.3 m/s + 5 % of mv) (2 to 15 m/s) |
Resolution | 1.97 fpm / 0.01 m/s |
General technical data | |
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Dimensions | 8 x 1 x 2 in. / 200 x 30 x 41 mm |
Operating temperature | -4° to 122 °F / -20 to +50 °C |
System requirements | requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0 |
Battery type | 3 x AAA |
Battery life | 15 h |
Length probe shaft | 15.748 in. / 400 mm |
Storage temperature | -4° to 140 °F / -20 to +60 °C |