1 Channel 12V Relay Module with optocoupler Isolation Supports high and Low Level triggering (Pack of 10) industrial There is a pad under Arts craftsOUR GUARANTEE Our There is a pad under the bottom so don't worried about scratching your table Redesigned to provide a better fitting 30V Trigger voltage: 0 1 Insulation design: The relay board is insulated with a patch optocoupler
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