信号继电器 KS XJ ; [电] signal relay ; [电] Annunciator relay ; [电] indicating relay

电子信号器 [电子] electronic annunciator ; audible annunciator

光电信号发生器 photogenerator ; photoelectric signal generator ; pick-up coil

电视信号发生器 television signal generator ; TVSG TeleVision Signal Generator ; TV SIGNAL GENERATOR

报警信号继电器 [电] alarm relay

分电器信号 distributor signal

电报信号发生器 TSG TelegraphSignalGenerator ; telegraph signal generator

电流信号指示器 current signal indicator