To add to this, I work in HVAC, and deal with overflow switches a lot. We use them in places where condensation could potentially overflow from an air conditioner or high efficiency furnace and damage home/office space. Most are 24 volt and I imagine could be wiring into some leg of the automation? We typically wore them to the R leg (power) to create a loop and when triggered they kill power to whatever they are wired into- think auto top off, return pump, etc. Just a thought, I’m totally new to all this but low voltage wiring is my jam.agree. happened to me on the previous attempt at this and made a no brainer for the detection system. Have an apex overflow detector for the bottom of the stand. Built in a little lip to the front edge of the stand and will be adding a rubber gasket to it to help as well. I have the luxury of working from home 90% of the time so when the alarm from the apex goes off I should be able to get to it fairly quickly. When traveling out of town I have friends and family on stand by to keep an eye on things.