The working principle of an electric kettle is that the steam generated during water boiling causes the bimetallic sheet of the steam temperature sensing element to deform. This deformation is driven by the lever principle to power off the power switch. Its power outage is non self resetting, so the kettle will not automatically reheat after power outage. The electric kettle was born in Chicago in 1891. With the development of technology, fast, safe, convenient, and fully utilizing energy have gradually become the main characteristics of water bottles, and tea enthusiasts in Britain have since fallen in love with them. In the 21st century, it has become a global best-selling product. The electric kettle adopts steam intelligent induction temperature control, which has the function of automatically powering off after water boils and preventing dry burning and powering off.