Non Spring Return Direct Coupled Actuator, 24Vac, 44 Lb-In Torque, On/Off, SPDT , Floating Control Signal, 2 Internal Auxiliary Switches, 95 Second Nominal Drive Time, Declutch Manual Operation, Accepts 1/4"-1/2" Square or 3/8"-5/8" Round Damper Shafts, -5-140 Degree Ambient Temperature Range, 5-95% RH Operating Humidity Range, Includes Mounting Bracket, Screws, Shaft Adapter and Water Tight Strain Relief Cable Fittings