Taco’s SmartPlug optimizes hot water system efficiency and reduces electrical consumption up to 94%. In the “Smart” mode, it monitors and records weekly household hot-water use patterns and adjusts hot water recirculation cycles accordingly. The device offers an optional “Pulse” mode, where the circulator will cycle on and off to maintain hot water at all fixtures. After 36 hrs. of inactivity, the device automatically turns off the pump until a need is detected; it also cycles on once every seven days to prevent corrosion or scale buildup.