The Resideo 40003916-047 Replacement Head is a 120 Vac, 60 Hz replacement power-head for the V4044A series zone valves. It comes with 96-inch lead wires and installs easily without draining the system—simply remove the old head and clip this unit on. Ideal for restoring zone control and eliminating valve motor failure. For an efficient and reliable HVAC system, the Resideo Valve Re... https://www.partshnc.com/40003916-047-resideo-v4044a-powerhead