When factory-new switching modules are delivered, only the firmware is installed, but no configuration is set up.
When factory-new loco modules are delivered, motor and headlight are preconfigured.
The following steps are necessary for commissioning:
Connecting to the model railway WiFi: In the app, open the menu item Settings/New Modules and register the CTC module in the WiFi. The data of your WiFi (SSID and password) will be written to the net.cfg file on the CTC module.
Note: After the upload, the CTC module restarts, i.e. it takes a few seconds until it is visible again.