thermostatic

having or maintaining a consistent temperature

The shower has a thermostatic water-mixing valve.

Another source of discontent with the Phase I stock has been obviated by relocation of the interior heating elements and the introduction of thermostatic control; this has eradicated the searing blasts of hot air passengers used to feel about their calves [...].

Relating to thermostasis

Reacting to change by attempting to move in the opposite direction.

Most importantly, Wlezien's results revealed thermostatic responsiveness. That is, when spending increases (decreases), the public's support for more spending decreases (increases), other things being equal.