https://devzone.nordicsemi.com/f/nordic-q-a/23131/differentiate-two-devices-with-same-serviceMy sensor app is based on nRF UART service and my current case in one sensor (peripheral) one gateway (central). In a situation where there are two pairs of sensors (S1, S2) and gateways (G1 G2). How can I make them only connect to one particular nodesen-USTelligent Community 13Thu, 29 Jun 2017 11:06:46 GMThttps://devzone.nordicsemi.com/thread/90979?ContentTypeID=1Thu, 29 Jun 2017 11:06:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:11b24bac-2be8-435a-84ff-370169146490Sigurd<p>Hi,</p> <p>In the SDK central examples we generally use 3 different methods to differentiate between peripherals, in order to determine what peripherals to connect to.</p> <ul> <li>Advertising name: Only connect to peripherals with a given name.</li> <li>BLE address: Only connect to a peripheral that have the correct Bluetooth address.</li> <li>UUID: Only connect to peripherals that have the correct service UUID.</li> </ul> <p>Assuming that your sensors uses the same UUID, you can either differentiate between them using the BLE address or the advertising name.</p> <p>All these methods are shown in the ble_app_hrs_c example. The example can be found in the folder:</p> <pre><code>&lt;SDK_InstallFolder&gt;\examples\ble_central\ble_app_hrs_c </code></pre><div style="clear:both;"></div>