Siemens induction cooker shows that B has started the internal automatic protection device. This is because the induction cooker has been used for a long time, and the internal temperature of the induction cooker is getting higher and higher, exceeding its predetermined value. Generally speaking, we turn off the induction cooker and stop using it for a while.
Siemens, the predecessor of Siemens Co., Ltd. is 1847 Siemens-Halske telegraph manufacturing company established in Berlin. 1897 the company was changed to a joint-stock company, and 1966 was officially named Siemens. Headquartered in Berlin and Munich, Siemens is the largest electrical and electronic company in Germany and even Europe, and one of the largest electrical engineering and electronics companies in the world.