Testo 605i | Thermohygrometer for Indoor Temperature and Humidity Measurement | with Bluetooth Support

Does not integrate with the new Testo Bluetooth gauges. Has to used a stand-alone app on your phone. Poor range as well.

Great product, easy to use

Bought this tool for my boyfriend who’s a HVAC tech. App is clean and easy to use. He was very pleased.

It seems to be reasonably accurate. I have no means of verifying calibration. However, it is serving the purpose of measuring temperature and humidity across floors and rooms in my home very well. It confirmed my suspicion that my home thermostat is over reporting the temperature and under reporting humidity levels, and that I have significant variation of both thru my home.

Great tool to add to your toolbox if your a HVAC tech.

Of you arent taking delta T on both wet and dry bulb temps your missing a big part of what the HVAC-R system is doing. This doesnt have the greatest range but both that has to do a lot with building materials between you and the probes. They are accurate and precise because they almost match each other. Great for diagnostics and for quickly giving value added to preventative maintenances.

Very accurate

Works perfect with my testo 550i connectivity is spot on with Bluetooth

Fantastic probes with clear readings on the app. Grabbed two and my TD was always spot on. Discovered low charges more accurately than a thermometer.

Helps when tracking temperature and humidity in many applications. I use it to check the temperature inside WI coolers during unit startup. This probe along with the pressure and temperature sensors allow for TEV adjustment and monitoring out side the cooler in most cases. You can also use it to determine the correct charging of AC systems using piston type metering devices to determine wet bulb temperature of the space. I’ve just loaded the new testo App but the older one worked well for me.