Rotary Electric Actuator, Function: Spring Return. In the event of a power failure, the actuator returns the damper to the safe position in about 10 seconds [1]., Torque: 15 Nm (nominal) / 30 Nm (indent) [2]., Power supply: Multi-voltage, operates from 24 to 240 VAC/VDC [2]., Control Signal: "S" (On-off) model, typically used for fire and smoke dampers [1]., Certifications: ATEX, IECEx and SIL2 compliant [2]., Protection: IP66-rated, corrosion-resistant aluminum housing [2].