From Testo, the 410-2 rotating vane anemometer designed for measuring air velocity, air temperature and humidity. The pocket-sized meter provides instant, accurate on the spot readings at ventilation grilles and air outlets. Constructed from high-quality impact resistant materials the robust meter is ideal for HVAC engineers and technicians.

Compact in design, the handheld instrument features an in-built 40mm rotating vane which calculates the wind speed passing through the impeller. With a measuring range of 0.4 to 20 m/s, the 410-2 anemometer can even be used for low flow speeds. In addition, the 410-2 is equipped with a humidity sensor and an NTC temperature sensor with a measurement range of -10 to + 50°C for air condition inspection. The user is, therefore, able to measure air temperature and humidity reliably.

Operation is simple, just 3 control keys enable the user to easily scroll through and select the desired function. The 410-2 displays the units for air velocity and temperature as m/s, km/h, fpm, mph, kts, Beaufort, ° C, °F and wind chill. The Testo 410-2 also displays humidity, relative humidity, wet bulb and dew point temperature. With an illuminated display, all recordings are clearly shown on the front screen, even in low light and dark conditions.

Suitable for both indoor and outdoor measurement applications the 410-2 includes a plug on protective cap for extra protection while not in use. An integrated wrist strap also provides extra security.

• Compact, hand-held design
• Ideal for indoor and outdoor applications
• Built-in 40mm rotating vane
• NTC Temperature sensor
• Simultaneous calculation of air flow velocity and air temperature
• Single-point averaging
• Hold function for recording current values
• Easy to read illuminated display
• Powered by 2 AAA batteries

Rotating vane anemometers are used to measure environmental conditions 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 and planning and more importantly health and safety. Some of the more common applications are

• HVAC
• Construction
• Roofing
• Sailing, boating and windsurfing
• Climbing and hiking
• Aviation, wind direction, airflow and gust
• Weather stations and meteorological studies

Q - Is there a recommended replacement battery?
A - Yes, the Testo 410-2 anemometer uses Alkaline AAA batteries for its power supply. See RS part number 744-2209

This handheld anemometer from Testo is a reliable instrument for measuring air temperature, velocity and humidity. As it's made of impact-resistant materials, it's a good choice for use in heavy-duty applications. The liquid-crystal display (LCD) screen provides a digital display that makes measured values easy to read. The screen is also illuminated, so you can use it in dark or dimly lit areas. This component is supplied with a protective cap to cover the probe when not in use. A built-in wrist strap provides added security during use to prevent accidentally dropping the instrument.

• Compact dimensions of 13 (length) x 46 (width) x 25mm (height) make it portable and easy to carry around
• Battery-powered to eliminate the need for cable connections for increased versatility
• Broad operating temperature range of -10°C to +50°C for use in a variety of harsh environments
• Air temperature measurement accuracy of ±0.5°C for maximum precision

• Heating, ventilation and air conditioning (HVAC) systems
• Commercial buildings

The AAA battery in this instrument has a long lifespan of 60 hours, so it will last a long time without the need for replacement.