G4A-1A-PE12V G4A-1A-PE-12V G4A-1A-PE-12V 通信继电器 G4A-1A-PE-12V-12V G4A-1A-PE12VDC G4A-1A-PE-12VDC G4A1APE-12VDC G4A-1A-PE-18VDC G4A1APE24DC G4A-1A-PE-24V