方便電工辨別電線(xiàn)束中、交叉連接點(diǎn)或遙控端點(diǎn)中的導(dǎo)線(xiàn)?？捎?BR>于雙絞線(xiàn)（電信、數(shù)據(jù)通信等）、單導(dǎo)線(xiàn)、同軸電纜、無(wú)電交流
電線(xiàn)以及其他大多數(shù)的電線(xiàn)。
樣本編號(hào)       UPC號(hào)                         說(shuō)明
77HP          08687                  77HP音頻發(fā)生器
77HP/6A     08688                 77HP/6A音頻發(fā)生器
77HP/6AC  60480                 77HP/6AC音頻發(fā)生器
樣本編號(hào)      UPC號(hào)                         說(shuō)明
77CS         08686            經(jīng)典77系列音頻發(fā)生器皮質(zhì)繩套

特性/規(guī)格                                                     77HP        77HP/6A          77HP/6AC
可選鳥(niǎo)鳴聲                                                      √              √                        √
持續(xù)測(cè)試                                                         √              √                        √
極性測(cè)試                                                         √              √                        √
通話(huà)電池供電                                                   √              √                        √
雙線(xiàn)模塊測(cè)試引線(xiàn)（RJ-11）                              √               √                       √
三色LED指示燈（顯示交流環(huán)形連接法線(xiàn)電壓）     √               √                        √
防風(fēng)雨設(shè)計(jì)                                                     √               √                        √
帶針床穿透器的扁嘴夾頭                                                    √                         √
織物測(cè)試引線(xiàn)                                                                                              √
工作電池（9V，不包括在內(nèi)）                            √               √                        √