SR502-5 2 Zone Switching Relay w/ Priority 319143-204 RB-5 gun does not need

RB-5 gun does not need a power supply and can be used anywhere at any time

The control allows for multiple mixing options including injection

Wirelessly communicates with zone thermostats

The SR501 single zone switching relay is UL and CSA listed

SR502-5 2 Zone Switching Relay w/ Priority 319143-204 RB-5 gun does not needThe Taco Switching Relay is the best choice for all your zoning needs, with advanced timer and boiler functions, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integration is achieved.