Thermal electric actuator consists of three parts: temperature controller, valve actuator and
valve. The thermostat is installed on the inner wall of the room, and is connected with the
electric actuator with a cable. Generally, a 100cm cable is used to connect the actuator to the
selected control point (thermostat, programmer, timer or other remote Device). The actuator
is connected to the valve with a nut, when the indoor temperature reaches the temperature
set by the temperature controller. The positive thermistor in the thermal electric actuator
starts to work, and the thermal expansion device is heated to close the valve. The indoor
temperature drops, the thermostat is disconnected, and the actuator cools down. The
expansion device contracts and the valve opens.