https://devzone.nordicsemi.com/f/nordic-q-a/25121/number-of-bl-mesh-clientsIn the Bluetooth Light Controller example for the client in main.c these constants are defined: #define SERVER_COUNT (3) #define CLIENT_COUNT (SERVER_COUNT + 1) Why is it necessary to have 4 clients, when only one devboard is used in the exampleen-USTelligent Community 13Thu, 14 Sep 2017 07:46:34 GMThttps://devzone.nordicsemi.com/thread/98950?ContentTypeID=1Thu, 14 Sep 2017 07:46:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0074fd8d-6311-4288-b59f-20c800d746aaBj&#248;rn Kvaale<p>Pretty sure that you can adjust the SERVER_COUNT and CLIENT_COUNT (see this Devzone <a href="https://devzone.nordicsemi.com/question/164160/light-control-mesh-exemple-with-2-servers/">post</a>). You don&#39;t necessarily need to use 4 clients. As for why the CLIENT_COUNT = SERVER_COUNT + 1, this <a href="https://devzone.nordicsemi.com/question/167146/confusion-about-server-count-and-client-count-in-ble-mesh/">Devzone answer</a> explains things quite well.</p><div style="clear:both;"></div>