This is kind of a strange question so I'm not sure if it really belongs in modifications or not, but none the less...
Is it possible to connect external devices to the access point of the cerbo and communicate via modbus tcp to those devices connected via the ap? Scenario is that I have 3 external relay modules connected to wireless lan (same lan that cerbo is connected to) that are controlled via node red and modbus tcp. If the lan goes down for any reason I lose communication with the relay modules obviously. If it is possible to connect them directly to the cerbo ap this would be a better solution. I'm wondering if the cerbo ap is only for remote access to the gui or if it is fully functional?