The Resideo VC2114ZZ11 is a 2-position low voltage actuator designed to control the opening and closing of zone valves in hydronic HVAC systems. It operates by responding to low voltage signals, driving the valve fully open or closed to regulate water flow. Commonly used in fan coil units, radiators, and underfloor heating systems, it ensures efficient temperature control. Its compact design supports easy installation, while reliable operation enhances energy efficiency, zoning accuracy, and overall system performance in residential and light commercial applications.