Underfloor heating actuator is controlled by room thermostat, it open or closed according to room temperature or manifolds loops return water temperature. The electric heating actuator realises the temperature adjustment function through the principle of thermal expansion and contraction of the temperature sensing element. It is mainly used in the room temperature control or layered temperature control system of the floor heating system. In the individual room where the UFH is installed, the temperature needs to be adjusted, and the temperature controller can be set Linked with thermal actuator.