3-Kanal Optokoppler Isolationsmodul AC 220V Prüfmodul kein Leiterplattenhalter
5,57 €
Function:test whether AC 220V is existed;when there is 220V,optocoupler can be conductive to ground;otherwise,it is not conductive. Adaptive to connect with PLC,compatible to almost all PLC input. hope you could understand.
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