Exact ! But you can test to verify this issue.
- Improved text
in the shelly interface i have selected this option for the opposite physical switch:
Detached Switch - Set Shelly device to be in "Detached" switch mode - switch is separated from the relays.
In fact it is the wire that comes from the shelly opposite switch who generates interference
If i disable this switch i have no PB
sometimes happens that the relay starts to switch on / switch off quickly fifteen times without any external action and then stays on.
Often probably due to the rapid switching, shelly is reset and lost that configuration. If I select detach buttons 1 and 2 in the configuration there is no more problem. I suspect an unstable input level on buttons one and two which could make it look like physical button pressed. The shelly button configuration is in edge mode
Why my post has been delete and tread marked as resolved ?
Same issue: switching Shelly 1L off, it seems to crash and the lamp flickers very quickly