Accurately measure air velocity, volume flow, air temperature and humidity with this hot wire probe from Testo. It features Bluetooth connectivity for wireless transmission of data to your device, making it a convenient choice. The probe runs on AA batteries, so it offers flexible use as there's no need to connect it to a power source. Its included humidity sensor has a wide measurement range of 5% to 95%RH, making it suitable for use in most work environments. This hot wire probe is compatible with the Testo 440 series of data loggers for ease of use.

• Automatic absolute pressure compensation to ensure precise measurements
• Wide temperature measuring range of -20°C to +70°C for use in demanding environments
• Broad pressure measurement range of 700 to 1100hPa for use in heavy-duty applications

• Ventilation ducts
• Industrial work environments

Yes. The telescope has an extendable length of 570 to 1000mm and a compact head diameter of 9mm, so it can easily fit into areas that are difficult to access.