• Bluetooth range of 350 ft
• Quickly and accurately measures relative humidity and temperature in rooms, ducts, and chambers
• Automatically calculates dew point & wet bulb temperature
• Small diameter probe is ideal for in-duct measurements
• Measurement data is transmitted to the convenient and powerful testo Smart Probes App in your smart device
• Tough, accurate, and easy-to-use
• For all HVAC/R technicians and contractors

The testo 605i Smart Probe thermo-hygrometer is a humidity and temperature measuring instrument that quickly and accurately measures relative humidity, dew point, and temperature in rooms, ducts, registers, and environmental boxes/chambers . Users can read the measurements using the testo Smart Probes App installed on their smart device. Smart Probes can be used individually or combined with other Smart Probes to create measuring solutions for most HVAC/R applications. Great for setup and diagnostics of large and small HVAC/R systems! The testo 605i works on smart devices with either Android or Apple operating systems. The testo Smart Probes App is a powerful and easy-to-use tool. It allows you to remotely read measurements from up to six (6) Smart Probes and easily document/report the results. Automatic calculations make it a snap! All measurement data is displayed as instrument readings, tables, or graphs. The measurements can be quickly saved as PDF or Excel files. The App creates custom reports which can be saved and/or shared by email. All your data can be stored and retrieved saving you hours of time consuming paperwork! Testo Smart Probes: Compact Bluetooth Instruments The compact and wireless Smart Probes can be operated by a smartphone or tablet via the testo Smart Probes app, which also provides complete reports at the push of a button. These durable multi-function probes are perfect for all aspects of the HVAC field. Bluetooth range of 350 ft. The Smart Probes offer you the following • Comprehensive selection of measuring instruments: smartphone anemometer, iPhone (and Android) hygrometer, smartphone thermometer and lots more • Practical kits for the most important applications in heating, air conditioning, ventilation and refrigeration • Operation and documentation entirely via the testo Smart Probes App