https://devzone.nordicsemi.com/f/nordic-q-a/13554/nrf5218-can-t-have-multiple-notificationsHi, I am using the s110 and SDK 6 and trying to have multiple notifications from different services/caracteristics. For now I have two services, one for the battery and one custom. I don&#39;t do anything special to send the notifications but each serviceen-USTelligent Community 13Fri, 29 Apr 2016 11:57:16 GMThttps://devzone.nordicsemi.com/thread/51717?ContentTypeID=1Fri, 29 Apr 2016 11:57:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c0e994e7-e935-4664-bac9-a8b804b1b798Kenneth<p>Hi, the latest nRF51 SDK that support the S110 v8 is nRF51 SDK v10. I highly recommend to use it.</p> <p>Likely you have initialized device manager with BLE_GAP_IO_CAPS_DISPLAY_ONLY and SEC_PARAM_MITM. In addition you have setup your characteristics with BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM. In such case you might take a look at the \examples\ble_peripheral\ble_app_gls example on how you can handle the BLE_GAP_EVT_PASSKEY_DISPLAY.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/51716?ContentTypeID=1Thu, 28 Apr 2016 22:34:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dc2a6cb1-3029-4eac-a008-de5eaed13c9cDave_couling<p>The way you have setup your Service it appear you are requiring authentication (pairing) before you can access the service characteristics. BLE_GAP_EVT_PASSKEY_DISPLAY is indicative of a requirement for Pairing to the Central.</p><div style="clear:both;"></div>