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Top 5 Positive Customer Reviews for arm board relay
Arrived really fast and work as advertised, haven't pushed the limits on the switching capacity 10A 250VAC. They work great on low voltage applications too, I switch a 1A 12V power source and LED strip.
This board has a voltige regulator, the last board missed ports on the board and there was 12 volts on the input pins. This one i could measure less then 1 volt, and my arduino works like a charm together with this board