Fan Coil Actuator, 24Vac, Spring Return, Two Position, SPST, 15 Second Maximum Drive Timing, 8" Electrical Connection Length, 45 Degree Stroke, 6 Second Spring Return Timing, Used with 2 Way Normally Open VU52 Series Valve Bodies or 3 Way VU54 Series Valves, Stainless Steel Case, Aluminum Cover, Manual Operation Lever