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·Trunk line power supply unit
·MODEL：4741
·Magnetic Saturation Regulated Transformer
·Designed especially for CATV system with high reliability,
·Output voltage display.

·Trunk line power supply unit
·MODEL：4742
·Toroidal Type transformer
·Designed especially for CATV system with high reliability
·Output voltage display.

·Trunk line power supply unit
·MODEL：4742A
·Small, Toroidal Type transformer
·Designed especially for CATV system with high reliability
·multi-function, auto controlling.