@Dwalt Hi, Im also looking for documentation on this :-) Regards, Jan

Of course it is, "A MySensor radio network can consist of up to 254 different radio nodes and each radio node can report data for 254 attached child sensors. This means that you can, in theory, manage data for up to 64516 sensors in a single radio network. If this isn't enough, you can create another parallel radio network on a different channel and there are 126 available channels." The above was an extract from the getting started page. Thank you for correcting me.

Unfortunately I don't know anything about Domoticz so I cannot say what "ID Enfant" stands for and where it comes from since the child id should not have to be unic in the system only the NODE_ID ( unfortunately it seems like this is also called sensorid sometimes ). If Domoticz needs unic CHILD_ID for all then I think it has been implemented incorrectly. I hope someone with more knowledge about Domoticz chime in here and explain this better.

Solved by adding a short delay between the RX/TX turnaround when replying with an ACK message. In file MyTransport.cpp at line 706 in the "if (msg.getRequestEcho) block, right after the debug message "TSF:MSG:"ECHO REQ" added a 2ms delay to allow the caller to switch from TX to RX mode. GS

Hi, I erase my arduino with EEPROM_clear script, and It works now. Thanks.