--\nOur eBay Store\n\nTesto 0560 1405 405i Smartprobe Bluetooth Thermal Anemometer\n\nProduct Details\n\nThe Testo 405i thermal anemometer with smartphone operation 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.\nWith the Testo Smart Probes 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. \n\n--Temperature sensor: NTC\n--Measuring range: -20 to +60\u00B0C\n--Accuracy: \u00B10.5\u00B0C\n--Resolution: 0.1\u00B0C\n--Velocity - Hot wire anemometer\n--Measuring range: 0 to 30m/s\n--;