With the testo 405i hot wire anemometer, you can measure air velocities, temperatures and volume flows. Via Bluetooth, the readings are transmitted wirelessly straight to the testo Smart Probes App on your smartphone or tablet. You can view the values conveniently and use numerous intelligent features.










Testo 405i Thermal Anemometer
Ref: 187102
With the testo 405i hot wire anemometer, you can measure air velocities, temperatures and volume flows. Via Bluetooth, the readings are transmitted wirelessly straight to the testo Smart Probes App on your smartphone or tablet. You can view the values conveniently and use numerous intelligent features.
- For measuring volume flow, air velocity and temperature
- Simple configuration of the dimension and geometry of the duct cross-section for determining the volume flow
- Convenient for working in ventilation ducts thanks to its telescopic tube, which can be extended up to 400 mm
- Really convenient to operate thanks to the testo Smart App (e.g. easy viewing of readings, measurement data trend, log function)
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| Product Category |
Specification for: Testo 405i Thermal Anemometer
| Accuracy | (0.1 m/s + 5 % of mv) (0 to 2 m/s) (0.3 m/s + 5 % of mv) (2 to 15 m/s) |
| Battery life | 15 h |
| Battery type | 3 AAA micro batteries |
| Diameter probe shaft | 12 mm |
| Diameter probe shaft tip | 9 mm |
| Dimensions | 200 x 30 x 41 mm |
| In Box | testo 405i thermal anemometer with smartphone operation including extendible (400 mm) telescope batteries and calibration protocol. |
| Length probe shaft | 400 mm |
| Measuring range | 0 to 30 m/s |
| MPN | 0560 1405 |
| Operating temperature | -20 to +50 C |
| Product colour | black/orange |
| Product-/housing material | Plastic |
| Range | Smart Probes |
| Resolution | 0.01 m/s |
| Storage temperature | -20 to +60 C |
| System requirements | requires iOS 13.0 or newer; requires Android 8.0 or newer; requires mobile end device with Bluetooth 4.2 |
| Type | Probes |
| Weight | 119.6 g |