Non Spring Return Direct Coupled Actuator, 24Vac, 175 Lb-In Torque, Nema 2 Rated, 0/2-10Vdc, 4-20Ma with 500 Ohm Resistor Control Signal, 2 Internal Auxiliary Switches, Manul Declutch Mechanism, 100K Ohm Voltage Input Impedance, 500 Ohm Current Input Impedance, 95 ± 3 Degree Rotational Stroke, 95 Second Nominal Drive Timing, 3/8"-11/16" Square or 3/8"-1.06" Round Damper Shafts, -5-140 Degree Ambient Temperature Rating, 5-95%RH Non Condensing Oeprating Humidity Range, Includes Mounting Bracket, Self Centering Shaft Adapter