The Testo 405i is a wireless hot-wire anemometer designed for measuring air flow, volume flow and temperature. The pocket-sized meter provides fast accurate readings at ventilation grilles, ducts and air outlets. Constructed from high-quality materials the tough mini anemometer is the ideal instrument for HVAC technicians and service engineers.

Compact in design, the hand-held anemometer uses a combination of hot-wire and NTC thermistor sensor technology to deliver readings with extreme accuracy. Equipped with a telescopic shaft which can extend to 400mm the Testo 405i anemometer is ideal for applications where measuring space is hard to reach or limited. The 405i Bluetooth anemometer records wind speed from 0 to 20 m/s while the NTC sensor range goes from -20 to +60 °C. When used in combination with the Bluetooth Testo 605i thermal hygrometer (913-2585), the Testo 405i is suitable for determining cooling or heating performance.

The Testo 405i handheld anemometer connects via Bluetooth to Android, iOS smartphones and tablets. It can display real-time air temperature, airflow velocity and volume flow measurements on to the user's screen. The Testo Smart Probes App enables you to configure, view and calculate all from your mobile device. Additionally, all data and information can be saved into Excel and PDF formats for logging and sharing. Up to six separate devices can link to the App at any one time allowing remote system set up and monitoring.

The Testo Smart Probes App is available to download free from the App Store or Google Play and is compatible with all of the instruments from the Testo Smart Probes range. The app can display real-time measurements and results on the screen. Anything up to six Smart Probes can work in tandem and the information (including pictures) can be saved in Excel or as a pdf document.

• Slim, lightweight design
• Hot-wire and NTC sensors
• Fast, accurate, easy to read results
• Measures airflow speed, volume flow and temperature
• Measurement ranges 0 to 20m/s and -20 to +60°C
• Connects via Bluetooth to smartphone or tablet
• Up to 6 devices can connect at any one time
• Free Testo Smart Probes App for display and data analysis
• Save results in Excel or PDF
• Compatible with iOS 8.3 or newer, Android 4.3 or newer + Bluetooth 4.0
• 15-hour battery life / 3 x AAA batteries

Hot-wire anemometers are the ideal instrument for engineers and technicians looking to carry out tests and surveys on ventilation, air conditioning equipment. They are used to measure airflow and temperature quickly and accurately. The information and data they provide are vital in a wide range of applications and environments. They are essential for reporting, forecasting, planning and most importantly health and safety. Some of the more common applications are

• HVAC system performance
• Environmental testing
• Clean rooms
• Air balancing
• Fans / motors / blowers
• Air conveyors
• Furnace velocity
• Wind Direction and gust

Requires iOS 7.1 or newer, Android 4.3 or newer, mobile end device with Bluetooth 4.0

AAA batteries (x3), calibration protocol

Use this accurate thermal anemometer from Testo to measure temperature as well as airflow velocity and volume. It uses Bluetooth technology to display real-time measurements on your smartphone or tablet screen for convenient use. The compact device is battery-powered, which makes it portable and easy to carry around. As it's made from high-quality materials, the robust instrument withstands harsh working conditions and regular use. Its telescopic shaft extends up to 400mm to take readings in hard-to-reach or confined areas.

• Wide temperature sensing range of -20°C to +60°C for use in demanding environments
• Compact dimensions of 200 (length) x 41mm (height) to fit easily in your pocket
• Saves all data and information in Excel or PDF (portable document format) for ease of logging and sharing

• Building and construction sites
• Health and safety inspections
• Air conditioning

You can use any Android, iOS smartphone or tablet to read measurements with this device. The Testo Smart Probes App is available to download from the App Store or Google Play and is compatible with all of the instruments from the Testo Smart Probes range.