https://devzone.nordicsemi.com/f/nordic-q-a/75691/about-ble-security-modeHI. I searched this one, but I could not find clearly answer. I want to set BLE Security mode 1, level 1. I know there is Security mode 1,2, level 1~4. but on code, there are No pairing/bonding, Pairing, no bonding, Just Works bonding etc... en-USTelligent Community 13Thu, 27 May 2021 13:27:48 GMThttps://devzone.nordicsemi.com/thread/312134?ContentTypeID=1Thu, 27 May 2021 13:27:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:409e3e9f-384c-4c59-95aa-58a7a1c20f4fSimonr<p>Please check out the <a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/lib_peer_manager.html">Peer Manager documentation in our Infocenter</a>, which we use in our example applications to manage BLE security.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>