Marketing InformationThe patented SmartPlug® instant hot water control lets you upgrade any hot water recirculation pump with a power cord to "Smart" operation. Simply connect the SmartPlug® to any 110 V power outlet then plug the circulator power cord into the SmartPlug®. Using a sensor that mounts to the hot water supply pipe, the SmartPlug® will record the daily hot water usage pattern in a home and adjust the circulator run time automatically. Hot water will always be available when needed. No-programming, timers or aquastats required, sensor included.