Saltwater version stability and MQTT sanitizer time topic

[dvoc]

Hello Ulrichmay,
I've been using your code branch of diyscip specific for saltwater SPA since last summer without issues. Many thanks for this project.
This year I have a lot of disconnections and when I press a button on the control panel I heard 3 beeps instead of one. I am thinking about building hardware version 2 or connecting 3.3 to 5v voltage adapters between miniD1 and the SPA.
Do you think that a voltage adapter will improve stability?
Additionally I've noticed that YorffoeG has added sanitizer MQTT topic to set sanitizer duration, it should be great to have an update of your code with this topic.
Many thanks.