Have a large kettle with more than one heating element? Or maybe you just have multiple devices with heating elements that you want to control at the same time? The BrewCommander 240v Relay Module from Blichmann Engineering is what you need. This 240v BrewCommander Relay can be wired to the 240v Brewcommander Brewhouse Controller to allow control of another 240v element with the same BrewCommander Controller. It's just that easy!