Electrical appliances generally refer to all electrical appliances. From a professional point of view, it mainly refers to electrical devices, equipment and components used to connect and disconnect circuits and change circuit parameters, so as to control, adjust, switch, detect and protect circuits or electrical equipment. From the perspective of ordinary people, it mainly refers to some common household appliances that provide convenience for life, such as TV sets, air conditioners, refrigerators, washing machines, various small household appliances and so on.