The Taco SR503-4 3-Zone Switching Relay simplifies hydronic heating control by managing up to three zones with individual thermostats. With universal compatibility and plug-and-play wiring, it’s perfect for residential heating systems requiring efficient zone management and circulator control.
Taco SR503-4 3 Zone Switching Relay
Original price was: $173.17.$124.18Current price is: $124.18.
Sale!80 in stock
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