I don't think so, I've tested the module dozen of times, I think 4,7k would work but anything below 4,7 is hazardous, I assume it was working on a breadboard because of the extra resistance of pins, wires etc (my guess), anyway 10k is a safe option.
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Hi @Gordon
I don't think so, I've tested the module dozen of times, I think 4,7k would work but anything below 4,7 is hazardous, I assume it was working on a breadboard because of the extra resistance of pins, wires etc (my guess), anyway 10k is a safe option.