Taco SR504 Switching Relay combines clearly labeled PC board layout with advanced features that allow for total system customization. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups. Taco SR504 switching relay is UL/CSA listed, uses standard “ice cube” replaceable relay and is compatible with conventional and programmable thermostats.

Features:

• External Indicator Lights
• Switchable Priority
• Simplified Wiring
• Fully Enclosed Snap-Out Relays
• Compact Design
• Fuse Protected
• 100% Factory Tested
• Isolated End Switch
• Contractor Friendly PC Board Layout
• Universal Thermostat Compatibility
• UL and CSA Approved
• 24 Volt Power Input or Output Terminal
• Made in the USA.

Technical Specifications:

• Zones: 4
• Power: 120VAC
• Max combined load: 20.0 AMPs
• Dimensions: 10.25" wide x 6.75" high x 2.75" deep.