The Resideo 40003916-026 Power Head Assembly 24V is a vital component for HVAC systems, specifically This power head assembly has a supply voltage of 24V AC and a frequency range of 50 Hz to 60 Hz, ensuring dependable and effective management of heating zones in home or commercial settings. It features an 18" connection length and leads on the same side as the manual lever, making ins... https://www.partshnc.com/40003916-026-resideo-v8043e-pwr-head