G5B01B01048.0 G5B01B01060.0 G5B-1-12V G5B-1-12V 通信继电器 G5B-1-12VDC G5B-1174P-US-5V G5B-1174-US-12V G5B-1-18VDC G5B-1-24V G5B-1-24VDC