Supervision or control of temperatures in non-aggressive, liquid or gasiform media. Specially suited for wall mounting. The protective spiral SW-200 is determined for use with all temperature control tasks within non-aggressive types of gas that fl ow in conduits, while the dip sleeve TH is determined for all control tasks within non-aggressive fl uids. The application of the dip sleeve type NTH is required when using the device for the control of temperatures in aggressive fluids.