It would be useful to be able to change the state of a relay via VRM for example that could control a load remotely. IE - turn an airconditioner if it had been left on accidentially . At the moment a customer is using the relay in the MPPT to do this function but this is not ideal.
What GX device are you using?
Most gx devices have a relay in them that can be programmed and accessed through the interface.
The cerbo has two, one for generator start stop and one to manually turn on and off. You can set it to be normally open or normally closed.
Settings - relay - function...
