damper actuator, vent actuator, belimo,

Tritherm Damper or Vent Actuator is robust and relable. It has a high torque. The powerful actuator motor IS only running when it is moving from the open to close position and vice versa. Power to the motor is cut off when the fully open or close position is reached. TD-25 has a fast closing speed of 30 seconds. The actuator comes complete with the drive connector and them easy to mount aluminum brackets.