This is a new and improved HS5500, it comes with the addition of an on/off switch so that you no longer have to unplug the unit to kill the power. This is built with all Parts from U.S.A. No Chinese components in this baby. It also has 40 amp solid state relay to give better protection against relay overload for longer durability. The controller with 5500w heating element has been tested, bringing a keg to operation temperature in approximately 40 minutes. Each one of these is bench tested by the manufacturer. The unit comes without a plug so that it can be adapted to the type of receptacle you have installed or are going to install, the wires are labeled. Hook this baby to a beer keg Or a Hillbilly stills Milk Can boiler with a hot water heater element installed and you’re ready to go with a great controller. With this you will Get the HS5500 Controller and the Element Kit. It will fit on all boilers that we sell.