Siemens 5Nm GDB Series Damper ActuatorsSiemens Electronic motor driven actuators for three position and modulating control Nominal torque 5 Nm (GDB), 10 Nm (GLB) Mechanically adjustable span between 0 90 Pre wired with 0. 9 m long connection cables Type specific variations with adjustable offset and span for the positioning signal Position indicator Feedback potentiometer Self adaption of rotational angle range and adjustable auxiliary switches for supplementary functions For damper areas