The robust and compact measuring device features a sensor input for high-precision Pt100 sensors and two inputs for fast thermocouple sensors. It is wireless, meaning that the measurement data is transmitted via radio, allowing the measurement values from up to three additional temperature sensors to be displayed on the clear device display. In total, the device can capture 6 channels. With the plug-in high-precision Pt100 immersion/penetration sensor, a system accuracy of 0.05 °C is achieved, with a resolution of 0.001 °C. Therefore, the measuring system is ideally suited for use as a working standard. Measurement data can be documented via infrared transmission. Additionally, during cyclic printing, the output of measurement data, for example once per minute, is possible.