TACO SR504 FOUR ZONE SWITCHING RELAY

Taco SR504 Four Zone Circulator Switching Relay replaces every brand by every manufacturer and will even fit into the existing metal enclosure without rewiring incoming connections. The Four zone switching relay is UL and CSA Listed uses a standard “ice cube” replaceable relay and is compatible with conventional and programmable thermostats. External indicator lights provide instant diagnostic feedback making a snap of service calls or new installation start-ups.