STM is self-acting proportional temperature controllers used for temperature control and temperature monitoring primarily in steam or hot water applications for temperatures up to 200° C.
The controllers are:
Type-tested according to EN 14597 and protect against exceeding temperatures
District heating systems according to DIN 4747
Heating systems according to EN 12828 (DIN 4751) and EN 12953-6 (DIN 4752)
Water heating systems for drinking and industrial waters according to DIN 4753