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Description:
Taco Switching Relays are designed to make hydronic heating system control easier with a clearly labeled PC board layout and flexible customization options. Users can operate the relay with basic functions, DIP switch settings, or advanced features through the Taco Control mobile app. External diagnostic lights provide instant system response, helping simplify service calls and startup checks. These switching relays also feature switchable priority, built-in priority protection, simplified wiring, premium sealed relays, fuse protection, and a compact design. They are UL listed, 100% factory tested, compatible with conventional, programmable, and WiFi thermostats, and backed by an extended 3-year warranty.
Spec Sheet:
Amperage: 20
Width: 12-1/2"
Height: 8-1/2"
Diagnostic Lights: Front diagnostic indicator lights
Priority Features: Switchable priority with built-in priority protection
Wiring: Simplified wiring with contractor-friendly PC board layout
Relay Design: Premium sealed relays
Protection: Fuse protected
Compatibility: Universal thermostat compatibility, including conventional, programmable, and WiFi thermostats
Power Output: 24V power output for hard-wired thermostats
Transformer: Field-replaceable transformer
Design: Compact design
Testing & Certification: UL listed and 100% factory tested
Warranty: Extended 3-year warranty

Taco SR504-5 Next Gen 4 Zone Switching Relay w/ Priority Protection, Expandable
$270.96
Taco | SR502-5 | Switch Relay | 2 Zones |
$145.00
Taco SR504-4 Switching Relay, 4-Zone with Priority
$255.00
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