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The unit features a heavy-duty heat exchanger along with a fault code LED output for easy diagnostics
ensuring safety and efficiency for commercial applications
It simplifies power control operations
Temperature range: 90 to 250 degrees Fahrenheit
Taco SR504-EXP-4 4 Zone Switching Relay Expandable voomi_id_35205 The unit features a heavy-dutyProduct Description The Taco SR504 EXP 4 is a versatile and expandable 4 zone switching relay designed for optimal performance in hydronic heating and cooling systems. Engineered by Taco, this relay facilitates easy and efficient management of multiple heating zones, enhancing system functionality. Integrates with up to 20 zones using optional PowerPort Cards and Add on Power Controls. Features external indicator lights for quick diagnostic feedback
