• Measure high-side & low-side refrigerant pressure & temperatures (simultaneously) of AC/refrigeration systems
• Testo 549i now includes 45° angled hose connections
• Testo 605i now includes 90° foldable probe
• Calculate superheat and subcooling in the Smart Probe App
• Measurement data is transmitted to the convenient and
• Powerful testo Smart Probes App in your smart device
• HVAC softcase holds the complete set of smart probes
• 350 ft. Bluetooth® Range

The testo AC & Refrigeration test and load kit includes two testo 549i high-pressure measuring instruments, two testo 605i thermohygrometers and two testo 115i clamp thermometers for pressure, (air) temperature and humidity measurement. In conjunction with a smartphone or tablet, the kit is ideally suited to servicing and troubleshooting on air conditioning and refrigeration systems, as well as their installation. The testo 549i and testo 115i can be quickly and easily attached directly at the pressure connection or the temperature measuring point. They also make it considerably easier to work on measuring points that are a long distance apart, thanks to wireless connection to a smartphone or tablet. The measuring values of both instruments are transmitted via Bluetooth® to the testo Smart Probes App installed on your terminal device enabling convenient and flexible readout there. In addition, the App enables automatic calculation of evaporation and condensation temperatures as well as of heating/cooling output. All measurement data are presented either as a diagram or a table. Finally, the measurement data report can be e-mailed directly as a pdf or Excel file. Testo Smart Probes App The Testo Smart Probes App combines the power of your smart phone/tablet with the accurate measurements of your Smart Probes. The operation and display of the instruments are communicated via Bluetooth to the App on your smart phone or tablet. The Smart Probes App uses the measurements to create custom reports (including added photos and comments). Information and reports can be saved as files and/or sent by e-mail. For Apple iOS and Android.