Belimo GK24A Series Electronic Fail Safe Damper ActuatorsBelimo Electronic motor driven actuators for two position, three position, and modulating control. Nominal torque 40. 0 Nm, with spring return, self centering shaft adapter Mechanically adjustable span between 0 95 Pre wired with 1. 0 m long connection cables. Type specific variations with adjustable offset and span for the positioning signal, position indicator, feedback potentiometer and adjustable auxiliary switches for supplementary functions. For