https://devzone.nordicsemi.com/f/nordic-q-a/77448/about-power-consumption-in-gap-and-gatt-modeHi Devzone, I know that more specific information is needed (time interval, Tx power, data length, ....) to make a comparison between GAP and GATT. But in general, which one consumes more power? For instance that I need to send some data to centralen-USTelligent Community 13Wed, 14 Jul 2021 22:47:16 GMThttps://devzone.nordicsemi.com/thread/320123?ContentTypeID=1Wed, 14 Jul 2021 22:47:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ba9ff105-77b8-47bd-a0f5-de6d20ce8927Marjeris Romero<p>Hi,</p> <p>Our BLE stack contains both GAP and GATT. GAP defines the general topology of the BLE network stack, while GATT describes how attributes (data) are transferred once a device has a dedicated connection.</p> <p>I think you are wondering if a device will consume more or less power when being in a connection vs only advertising.</p> <p>It will depend, usually less power will be consume if you are in a connection and adjust the connection interval for power efficiency. If you want to send data to a central you will need to be in a connection, if only sending advertisement you will not have any clue about if the packet has arrive to the central or not.</p> <p>Best regards,</p> <p>Marjeris</p><div style="clear:both;"></div>