Belimo TFB24-S Damper Actuator, 22 in-lb [2.5 Nm], Spring return, AC/DC 24 V, On/Off, 1 x SPDT. The TF series actuators provide true spring return operation for reliable fail-safe application and positive close off on air tight dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator.
