一位单控开关                                                              二位单控开关

                   一位双控开关                                                              二开双控开关

                   一位多控开关                       

                  三位单控开关                                                         四位单控开关 

                  三位双控开关                                                         四位双控开关

                                                    四位单控开关

                                                    四位双控开关

                二位二、三极插座                                                      三位二、三极插座

                                                四位二、三极插座