Review on Taco TSR502 4 Zone Switching Relay by Adam Matthews

We have two zones in our system and we have previously used the single zone version to control the circulation pump in one of those zones. Unfortunately, this version does not offer full ZC/ZR functionality. So when the Beckett Aquasmart on our boiler turned off the ZC when it went below the low limit, it also turned off the ZR. Bought this to replace the single zone version and migrate our other zone from Aquasmart to it. This panel has dedicated ZC/ZR connectors and works perfectly.