Strange behaviour with the button &#39;Read State&#39; on nRF Mesh Android App, sometimes it changes the light switch statehttps://devzone.nordicsemi.com/f/nordic-q-a/38216/strange-behaviour-with-the-button-read-state-on-nrf-mesh-android-app-sometimes-it-changes-the-light-switch-stateHi, I have a question regarding the behaviour of a button in the nRF App in Android, sometimes the button &quot;READ STATE&quot; in the &quot;Generic On Off Server&quot; configuration changes the state of the LED (turns it on/off) and the button &quot;ON/OFF&quot; doesn&#39;t do anythingen-USTelligent Community 13Wed, 05 Sep 2018 17:21:18 GMTRE: Strange behaviour with the button 'Read State' on nRF Mesh Android App, sometimes it changes the light switch statehttps://devzone.nordicsemi.com/thread/147436?ContentTypeID=1Wed, 05 Sep 2018 17:21:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f252c7de-a3ca-4886-90ab-f6fb3df74381Jackes5<p>Thank you so much! It was my mistake when changing&nbsp;the file simple_on_off_common.h</p><div style="clear:both;"></div>RE: Strange behaviour with the button 'Read State' on nRF Mesh Android App, sometimes it changes the light switch statehttps://devzone.nordicsemi.com/thread/147434?ContentTypeID=1Wed, 05 Sep 2018 16:48:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c3fbc8f1-0483-4825-ae42-7a1003e15d27Nikolay_D<p>Hello, maybe confused OPCODE_SET and OPCODE_GET.<br />Should be: GENERIC_ON_OFF_OPCODE_SET = 0x8202<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; GENERIC_ON_OFF_OPCODE_GET = 0x8201</p><div style="clear:both;"></div>