cooperj1 Posted September 19, 2018 Share Posted September 19, 2018 have a dio32 main board, using 120v to power it, do i use a second power source (12v) to power the port that connect the ribbon to the relay board to turn relays off and on.? solid red light comes, its connected. do the jumpers after the transformer decide what voltage goes to the ports? thanks jason Link to comment Share on other sites More sharing options...
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