In combination with a smartphone or tablet, all temperatures and pressures of the heating system can be measured and checked. Users can conveniently read their measured values via the app installed on the end device. When measuring IR temperatures, for example on an underfloor heating system, the app makes it possible to document the measurement with a picture, temperature reading and measurement spot marking. In addition, it is possible to change the displayed measured variables just as quickly. Application-specific menus such as pressure drop test incl. alarming support the heating technician in his daily work. All measured data can be displayed either as a diagram or in tabular form. Finally, the measurement data log can be sent directly by e-mail as a PDF or Excel file. The measuring instruments can be conveniently transported in the handy testo Smart Case and are always with you when you need them.