4-Zone Switching Relay

The Taco Switching Relay is the best choice for all you zoning needs, with advanced PowerPort Cards, external diagnostic lights, switchable priority and contractor friendly Primary Control board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integrating is achieved. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.”,”highlights”:[“Industry leading quality and dependability – 100% factory tested”,”Universal thermostat compatibility”,”Extended 3-year warranty”