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Taco Switching Relay SR504-2 combines clearly-labeled PC board layouts with advanced features
that allow you to completely customize your system. Priority capability for domestic hot water.
External indicator lights give you instant diagnostic feedback, making service calls or new
installation start-ups a snap. The Taco SR504-2 switching relay is UL listed, use standard
"ice cube" replaceable relays and are compatible with conventional and programmable thermostats.
For larger jobs, switching relays can be expanded up to 20 zones with priority.
Taco Switching Relay SR504-2 Features:
- Zones - 4 with Priority
(Priority capability for domestic hot water)
- Allows Circulator and Boiler to be switched on at the same time
- Double Pole - Single Throw (DPST)
- Connects directly to thermostat
- Switches - 110 volts or 24 volts
- LED Status Lights
- Maximum Combined Load - 20 amps
- UL and CSA approved
- Extended 3 year warranty
- Made in the USA
- Transformer Voltage - 120 volts
- Size - 10 1/4" w by 6 3/4" h by 2 3/4" d
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