I have a generac transfer switch that has aux contact (attached image)
I would like to create a sensor to detect when the generator is running. I do have a qubino 2 relay module - not sure if it can be used for this (and if so, how to wire). Any suggestions what device can be used for this?
The first thing that comes to mind is using a water sensor that has external leads and connect one lead to the common and the other to then normally open contact. It should report “Wet” when the contact is closed and “Dry” when it is open. (I know nothing of qubino 2...)