Use this hot-wire probe head from Testo to measure temperature and humidity levels in indoor areas. It has a broad temperature measuring range of -20°C to +70°C, so it's suitable for use in harsh industrial environments. For increased versatility, you can also use this probe head to measure absolute pressure and velocity.

• Wide humidity measurement range between 5% and 95%RH for use in damp and dry environments
• Light weight of 35g for ease of transport
• Long probe shaft length of 230mm to reach into hard-to-access areas

• Warehouses
• Packing facilities
• Laboratories
• Testing facilities
• Food and beverage industry

For ease of use, this device is compatible with measuring instruments from the 440 series.