The panel instrument M1-75 is a 4-digit device for potentiometer values from >1kΩ to 1000kΩ and a visual limit value monitoring via the display. The configuration happens via three front keys or via the optional PC-software PM-TOOL. An integrated programming interlock prevents unrequested changes of the parameter and can be unlocked again via an individual code. The electrical connection happens on the rear side via plug-in terminals. Selectable functions like e.g. the recall of the min/max-value, a zero point slowdown, a direct change of the limit value in operating mode and additional measuring supporting points for linearisation complete the modern device concept.