https://devzone.nordicsemi.com/f/nordic-q-a/20727/scan-time-outHi. I&#39;m using nRF51822, SDK12.2.0, S130 as multi-link Central. #define SCAN_TIMEOUT 10 Time-out is working well when it is Single connection. After 10 second, it stops scanning. When I use it as multi-link central, the operation is as below.en-USTelligent Community 13Thu, 23 Mar 2017 14:12:27 GMThttps://devzone.nordicsemi.com/thread/80884?ContentTypeID=1Thu, 23 Mar 2017 14:12:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cb5cd002-127a-48ff-ae78-cb4d61bd4fd7Hung Bui<p>When you stop the scanner and start it again, the scanner timeout will be reset.</p> <p>I would suggest you to use a app timer to do the task. You start the app timer when you start your first scanning, and then when the timer timeout (10 seconds) you check if you are scanning then you can stop scanning.</p> <p>You can have a look at our ble_peripheral examples we use app timer in most of our examples.</p><div style="clear:both;"></div>