@mfalkvidd Thank you very much! It's not that simple.

Hi. Sorry for my English. I'm new to automation and programming... I want to get advice from a guru... I made an OpenHab-based controller on a Raspberry PI... Installed MySensors Binding... Now I want to make an mqtt gateway using a GatewayESP32MQTTClient sketch that will connect to the Raspberry via WiFi... But I want to connect the sensors by wire, without using RF... in each room I plan my own separate ESP 32 with sensors... How many ESP32 with GatewayESP32MQTTClient can I connect to Openhab via WiFi? In each room, about 15 sensors will be connected to the ESP32... Touch buttons, relays, gas sensors, fire sensors, leaks, etc. Can I combine 15 different sketches from the examples into one sketch? Thank you for your advice and have a nice day!