Electric Water Heater Controller Kit (120V), Control Your Heater From Anywhere with the Home Automation App for Smartphones and Tablets. Wi-Fi Enabled with Belkin WeMo Light Switch Wifi water heater controller using a Belkin WeMo light switch For manual/auto and remote control of a water heater up to 120V, 1-pole, 50 amp Only UL recognized components used in kit Designed and assembled in U.S.