Zone Valve Control 3 Zone w/Priority

Taco ZVC403 Zone Valve Control-3 Zone with Priority

3-Zone External Indicator Lights Simplified Wiring Works with 2, 3, or 4-Wire Zone Valves Compact Design Fuse Protected Two Isolated End Switches Extra Set of Dry Contacts PC Board Layout Universal Thermostat Compatibility UL and CSA Approved Extended 3 Year Warranty