https://devzone.nordicsemi.com/f/nordic-q-a/2951/related-to-gatt-specificationHi All, I am planning to build a remote controlled device BLE(4.0 ). I referred developer.bluetooth.org/gatt/Pages/GATT-Specification-Documents.aspx but still not having clarity on &quot;which GATT specification&quot; to use for remote control device. en-USTelligent Community 13Tue, 01 Jul 2014 14:56:46 GMThttps://devzone.nordicsemi.com/thread/11210?ContentTypeID=1Tue, 01 Jul 2014 14:56:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:496b23f7-a862-4612-99ba-dd54aa3869a1Carles<p>For remote controls the usual approach is to use HID:</p> <p><a href="https://developer.bluetooth.org/gatt/profiles/Pages/ProfileViewer.aspx?u=org.bluetooth.profile.hid_over_gatt.xml">developer.bluetooth.org/.../ProfileViewer.aspx</a></p> <p><a href="https://www.bluetooth.org/docman/handlers/downloaddoc.ashx?doc_id=245141">www.bluetooth.org/.../downloaddoc.ashx</a></p> <p><a href="https://www.bluetooth.org/docman/handlers/downloaddoc.ashx?doc_id=239866">www.bluetooth.org/.../downloaddoc.ashx</a></p> <p>That&#39;s assuming you want a remote control with multiple keys and compatible with standard HID over GATT devices. If you only want a simple remote-controlled device, then you can use the UART over BLE sample from the SDK to implement your own, proprietary profile.</p> <p>Carles</p><div style="clear:both;"></div>