Resideo VU843A1020 Actuator

Fan Coil Actuator, 24 Vac, Spring Return, Two Position, SPST, 15 Second Timing, 8" Electrical Connection Length, 22 Degree Stroke, 4 Second Spring Return Timing, Used with 2 Way Normally Closed VU53 Series Valve Bodies, Stainless Steel Case, Aluminum Cover, Manual Operator Lever