The handy high-pressure meter testo 549 i is suitable for use in combination with a smartphone or tablet for the service and the search for faults in air-conditioning and refrigeration systems, as well as for their installation. The measuring device can be quickly and easily directly at the pressure connection. When working on far apart pressure ports simplifies the testo 549 i the application considerably - thanks to wireless connection to the smartphone or tablet. Also convenient: as for measurements no hoses are required, no or only very little refrigerant will be lost.And at the same time application of the pliers thermometer testo 115 i can also be individual parameters of refrigeration systems, such as overheating, calculate. On the terminal device installed on the testo Smart Probes App, users can conveniently read your measurement values. In addition, the Testo Smart Probes App the automatic calculation of evaporative and liquefaction temperatures. All measurement data are eith