https://devzone.nordicsemi.com/f/nordic-q-a/81734/the-bluetooth-connection-is-automatically-disconnected-and-the-reason-is-0x3e-is-this-related-to-the-small-rssi-valueThe bluetooth connection is automatically disconnected, and the reason is 0x3E. Is this related to the small RSSI value? I set the transmitting power as 4DB, and the RSSI obtained by the host scan is about -70~-80db. Is there any article recommendationen-USTelligent Community 13Wed, 17 Nov 2021 13:23:52 GMThttps://devzone.nordicsemi.com/thread/339438?ContentTypeID=1Wed, 17 Nov 2021 13:23:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:10c52415-cde5-4c59-861a-515941446b77Jared[quote user="wyang0824"]The peripherals and hosts used are our own boards.[/quote] <p>Has the board been tuned?&nbsp;</p> [quote user="wyang0824"]the host automatically connects to the peripheral, and the connection can be problematic at a distance[/quote] <p>Are you able to establish a connection, and what distance is it between the devices?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/339318?ContentTypeID=1Wed, 17 Nov 2021 01:37:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2cd7138d-0cec-44ce-97ff-76b76349c0e0wyang0824<p>There are about 100 peripherals placed around the host, and then when one of the peripherals is alarmed, the host automatically connects to the peripheral, and the connection can be problematic at a distance. The peripherals and hosts used are our own boards.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/339189?ContentTypeID=1Tue, 16 Nov 2021 10:17:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c3a86ad7-f027-4b0a-b509-6f1f7f69ce02Jared<p>Hi,</p> <p>What kind of environment are you testing in, is it noisy? Are you using a DK or a custom board? If you&#39;re using the latter, have you tuned the custom board?&nbsp; -70 dbm seems a bit low.</p> <p>regards</p> <p>Jared</p><div style="clear:both;"></div>