Siemens GAP196.1P Damper Actuator, Fast Acting, Fail-In-Place, 53 lb-in, 2-sec. run, 24Vac/dc, universal control signal (two-position, floating, 0-10Vdc/2-10Vdc, 4-20mA/0-20mA), dual auxiliary switches. Actuator Type: Fast Acting Failure Mode: Fail-in-Place Torque: 53 lb-in Control Signal: Universal input Positioning time: Runtime (operating with motor) <2s, Spring Return Time (on power loss) 2 s Position feedback: Yes Power consumption: Running: 28 VA / 19 W, Holding: 8 VA / 5 W Ambient temperature: -18…50 °C; 0…112 ºF Ambient humidity: 95 % r.h. Angular rotation: 90° Operating voltage: 24V AC/DC Auxiliary switch: 2 Cable length: 3ft Plenum cable Dimensions (W x H x D): 3.25 x 8.38 x 2.38 in Material, housing: Die-cast aluminum alloy enclosure Degree of protection: NEMA 2 / IP54