SH1 with add-on thermal sensors board

Hi, does someone has tried to connect SH1 powered at 12v DC to thermal add-on board ?

I've tried with two SH!, two different boards, two different probes with the same bad results.

After initial boot SH1 loose the AP's connection, start heating excessively, start to burn

smelling smoke. After several tests I presume add-on board is not compatible with SH1

but there is nothing written about this.

Thank you

No, they perfectly work without add-on board connected.

The problem come when connect the board and the probe.

Open ticket n. #T-20041092 no answer yet.

Thank you.

Tis is the wiring and result of earlier and last test (using SH-A and SH-B) different units