Blichmann Power Controller 240v Relay ModuleNeed to control more than one heating element for large kettles? Simply add up to 4 additional relay modules and drive them all with one power controller. Use to control an additional electric heating element Can add up to 4 relay modules to the Blichmann Power Controller 240v to control 5 elements simultaneously. Only meant to be used with the 240v Power Controller Note: Does not include the 240v Power Controller that is pictured.