2. Kettle is a household appliance, not a high-speed rail contraband. You can carry it with you and pass the security check, but note that the kettle is a high-power electrical appliance and cannot be connected to the train socket. The kettle is a stainless steel kettle body, which is used for boiling water and is a tool for boiling water. The kettle body is separated from the power base, which is convenient to use. The working principle is that the steam generated when water boils deforms the bimetal of the steam temperature sensing element, and the power switch is turned off by using the lever principle.