The robust and compact meter with a probe input for the high precision pt100 probe and two inputs for quick thermocouple probes three additional probes can be wirelessly connected to the testo 735 2 over an optional radio module with the attachable pt100 probe a system accuracy of 005 c with a resolution of 0001 c is achieved resulting in this measurement system being ideal as the working standard the temperature readings can be recorded in the meter and analysed on the computer in graph