Siemens GBB131.1P Damper Actuator, rotary, non-spring return, 221 lb-in (25 Nm), 24 Vac/dc, floating control, 125 sec run time, plenum rated. Torque: 221 lb-in Control Signal: Floating Positioning time: 50 Hz:150 s, 60 Hz:125 s Position feedback: No Power consumption: 7 VA / 7 W Ambient humidity: 95 % r.h. Angular rotation: 90° Operating voltage: 24V AC/DC Auxiliary switch: None Cable length: 3ft Plenum cable Dimensions (W x H x D): 3.94 x 11.81 x 2.69 in Material, housing: Die-cast aluminum alloy enclosure Degree of protection: NEMA 2 / IP54