Is there a way to reset sonoff 4 ch pro by sending any command serially.
"Reset 2" (for a complete flash erase and reset to standard config) or "Reset 1" (just reset to standard config) should be what you are looking for.
Thanks Leseratte
Most helpful comment
"Reset 2" (for a complete flash erase and reset to standard config) or "Reset 1" (just reset to standard config) should be what you are looking for.