https://devzone.nordicsemi.com/f/nordic-q-a/65520/ble-device-auto-disconnect-and-connect-reference-to-videoAS topic,I modify it from app_hid_mouse example from 52840 to 52833,and use timer1 to generating frequency 50kHz ,video as blow: but at first pairring and connecting,it would&#39;t disconnect.en-USTelligent Community 13Wed, 04 Nov 2020 01:41:40 GMThttps://devzone.nordicsemi.com/thread/278342?ContentTypeID=1Wed, 04 Nov 2020 01:41:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c12fdfa-ac97-4966-afa9-55af85fb2123wzszzxj<p>Hi,Turbo J:</p> <p><span>&nbsp;</span><span>Thank you for your reply, Pls close this topic,thank you!&nbsp;</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/267774?ContentTypeID=1Thu, 03 Sep 2020 08:57:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3676ae62-002a-4ef4-b16c-b9d71f2188f3Turbo J[quote userid="84662" url="~/f/nordic-q-a/65520/ble-device-auto-disconnect-and-connect-reference-to-video"]but at first pairring and connecting,it would&#39;t disconnect.[/quote] <p>Why should it disconnect?</p> <p>The Host will keep HID type devices always connected in order to be able to react to user inputs with low latency - it never disconnects on its own.</p> <p>Disconnects only happen when the device powers down while not in use - for longer battery life.&nbsp;</p> <p>I don&#39;t think the HID example code implements any battery management at all, that is up to the developer<strong></strong>.</p><div style="clear:both;"></div>