Users are convinced: Trafag thermostats are the best and most reliable available in the world.
Trafag thermostats do not require a power supply and enjoy an outstanding reputation. Being fully maintenance-free, they can be in constant use for several decades without any loss of accuracy.
Functional principle: The medium in the capillary tube reacts to temperature changes on the principle of heat expansion. This expansion is measured by means of a fine mechanical construction which activates a microswitch.
All Trafag thermostats (with the exception of room thermostats) are designed in such a way that changing ambient temperatures do not cause measuring errors. This means that contrary to non-compensated capillary sensor thermostats, the switching accuracy is guaranteed even with extreme ambient temperatures.