Honeywell Damper Actuator, Series: MS8105, 24 VAC/VDC, 50/60 Hz, 6/3 V-A Driving VA, Enclosed Screw Terminal Strip (22 - 14 AWG) Electrical Connection, 45 sec Nominal Driving at 60 Hz, 25 sec Spring Return Timing, 44 in-lb Torque, 95 kohm Input, Less Than 50 dBA Driving at 1 m, Less Than 60 dBA Spring Return, -22 to 149 deg F Ambient, -40 to 150 deg F Shipping and Storage, NEMA 2, IP54 Enclosure, 5 - 95% RH Non-Condensing Humidity, 3-55/84 in W x 6-81/54 in H x 3-5/32 in D, 2-Position, SPST Control Signal, Direct Coupled Mounting, 3/8 - 5/8 in Round or 1/4 - 1/2 in Square Shaft, 95 +/-3 deg Stroke