@nicolas-philippart yes, rs485 is also supported. https://www.mysensors.org/apidocs/group__RadioSettingGrpPub.html

with the successful map version 2.4.1, compilation and upload :-) :-) I open the console serie, nothing is displayed. So I check on my router ... Nickel connection is established I will search the forum to try to have the serial console and to combine the gateway with other sensor, etc. And later, try to code ... there is really a way to do a lot of home automation with this little chip Thanks again ;-)