https://devzone.nordicsemi.com/f/nordic-q-a/4996/where-can-i-find-s130-documentationWhere can I find s130 documentation? How stable is the SD since I cannot find documentation and the only example is under &quot;experimental&quot; ? Thanks!en-USTelligent Community 13Tue, 06 Jan 2015 12:12:31 GMThttps://devzone.nordicsemi.com/thread/17621?ContentTypeID=1Tue, 06 Jan 2015 12:12:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:016355e7-0202-487c-bcb1-19eaa5c3bfdaStian R&#248;ed Hafskjold<p>The documentation for s130 is in the <a href="https://www.nordicsemi.com/eng/Products/Bluetooth-Smart-Bluetooth-low-energy/nRF51822#Downloads">nRF51822 download page</a>. It is the S130-SDS file (S130 nRF51822 SoftDevice Specification)</p> <p>The s130 is still an alpha release and not production ready yet. It is hard to say how stable it is; it depends on your application. You have to try and test.</p> <p>If you don&#39;t need concurrent central and peripheral role, you can use s120 which is not an alpha and supports non-concurrent central and peripheral role.</p><div style="clear:both;"></div>