TACO SR504-4 4 Zone Next Generation Switching Relay, Expandable [New]

The Taco SR504-4 Switching Relay is the best choice for all your zoning needs, with advanced PowerPort Cards, external diagnostic lights, and contractor friendly PC 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.

24-Volt power input or output terminal

Fuse protected

Simplified wiring

Compact design. TACO. TACO. SR504-4.