12V220V 1/3/4 Kanal 1-Bit TLP281 PLC Optokoppler Isolationsmodul Detect Board
ab 1,97 €
1 Pc x Optocoupler Isolation Module. 3-Channel Optocoupler Isolation Module AC 220V Testing Module No PCB Holder. Function:test whether AC 220V is existed;when there is 220V,optocoupler can be conductive to ground;otherwise,it is not conductive.
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