Belimo Valve Actuator Nonfail-safe 24V Modulating GMB24-SR-X1 HVAC Water

The GMB(X)24-SR… actuators use a sensorless brushless DC motor, which is controlled by an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’s rotation and provides a digital rotation sensing (DRS) function to prevent damage to the actuator in stall.