PZEM-004T V4 returns NaN when connecting more than two devices

[flim-th]

I am experiencing an issue with the PZEM-004T V4. It cannot operate properly when more than two units are connected.

When I connect only two PZEM modules, they work correctly without any problems. However, when I connect the third module, all readings return NaN.

I purchased two units from the same store, and the third unit was ordered separately from China.

What could be causing this issue, and how can I resolve it?

[WaeiZ]

I have the same problem here, if you have the solution please tell me.