Hochspannung Detect Board AC 220V Optokoppler Trennmodul 3 5V Ausgang
ab 5,87 €
Function: Test the existence of AC 220V; When there is 220V, the optocoupler can be grounded; Otherwise, there is nothing working. Isolated optocoupler module 1. Function: can be used to detect the existence of 220V ac.
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