Data Sheet

No more surprises: the testo 405i thermal anemometer with smartphone operation from the Testo Smart Probes series is ideal for carrying out measuring tasks in ventilation ducts. It is easy to use the anemometer to determine air velocity, temperature and volume flows. The testo 405i is also suitable for measuring indoor air velocity. Practical when, for example, you want to locate non-airtight windows. Cooling capacities and heating outputs can also be calculated when used in conjunction with the testo 605i thermohygrometer. Operation independent of measuring location via your smartphone The testo 405i hot wire anemometer combines professional Testo measuring technology with App-based operation. This means you benefit from numerous additional functions in your day-to-day work. With the testo Smart App, you can view readings conveniently on your smartphone or tablet. You no longer have to spend ages trying to make out the display at poorly accessible points. Volume flow can also be measured easily using the App: following intuitive input of the duct cross-section, the App calculates this completely automatically. The App opens up other practical options too: it not only displays measurement data, but also evaluates and documents it. It is easy to carry out a timed and multi-point mean calculation with the App. It also displays the measurement data curve at the press of a button. And sends the measurement data logs as PDF or Excel files. System requirements: iOS 11 or later Android 6.0 or later Bluetooth 4.0 testo 405i thermal anemometer with smartphone operation, including extendible (400 mm) telescope, batteries and calibration protocol. Customers who viewed this product also viewed Customers who viewed this product also viewed testo 405 i – thermal anemometer with smartphone operation 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 : 0560 1405 Customers who viewed this product also viewed testo Smart Probes VAC kit Measurement of air and surface temperature, humidity, air velocity and volume flow Measurement menus for volume flow measurement in ducts and at outlets, identification of mould risk, easy image documentation including IR temperature reading and measurement spot marking : 0563 0003 10 Customers who viewed this product also viewed testo Smart Probes HVAC/R Ultimate kit For all measurements involving heating, air-conditioning, refrigeration and ventilation systems All Smart Probes for temperature, pressure, humidity and flow in one kit : 0563 0002 32 Customers who viewed this product also viewed testo 425 – Digital hot wire anemometer with App connection Simple, fast and precise flow and temperature measurement plus volume flow calculation in the ventilation duct More flexibility for duct measurements with the cable-connected telescopic probe (maximum length 820 mm) : 0563 0425 Customers who viewed this product also viewed testo 405 – Low Cost Thermal Anemometer 3 in 1 Air temperature, air velocity
& volumetric Air flow  Telescopic handle to 300 mm  : 0560 4053 Customers who viewed this product also viewed testo 440 Air Flow ComboKit 1 with Bluetooth® Intuitive: Clearly structured measurement menus for volume flow and parallel determination of air velocity, humidity, and temperature in ventilation ducts, or at ventilation outlets Smart: Hot wire probe (0.85 m) with telescope (2.8') – combine the Bluetooth vane probe (Ø 100 mm") with the telescope for ceiling outlets, or the funnel set for plate outlets (sold separately) : 0563 4406 Customers who viewed this product also viewed testo 440 Hot Wire Kit Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow and air temperature in ventilation ducts Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements : 0563 4400 Customers who viewed this product also viewed testo 440 delta P Air Flow ComboKit 1 with Bluetooth® Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts or at ventilation outlets​ Smart: simply combine the universal Bluetooth handle with the 100 mm vane or hot wire probe head and the extendable telescope (1.0 m)​ : 0563 4409 Customers who viewed this product also viewed testo 400 air flow kit with hot wire probe Standard-compliant determination of the volume flow in ducts using grid measurements as per EN ISO 12599 and ASHRAE 111 Determination of the volume flow at outlets by measuring the reference pressure and entering the manufacturer-specific K-factor : 0563 0400 71 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 App on your smartphone or tablet. You can view the values conveniently and use numerous intelligent features: