WHAT ARE THE EXTERNAL SWITCH TRIGGER MODES OF SONOFF DUALR3?
What are the differences in external switch trigger modes between SONOFF MINIR2 and DUALR3? How do the external switch of DUALR3 work? This article is to introduce the principle of the external switch trigger modes for you to figure it out once and for all. Choose the right trigger mode so that your external switches will work properly.
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