1CH High Level Driver Relay Module Optocoupler Isolated Drive Control Board New
ab 2,37 €
Step up module. Adapter Module. Step down module. NO:Relay normally open interface, before the relay is engaged, empty, after the relay is engaged, shorted to COM. Display module. NC: Normally closed relay interface, shorted to COM before the relay is engaged, shorted to COM after the relay is engaged.
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