It's dahua ipc & if you connect to ttl you can using public instruction reset config.
stop bootlodinf with * and put some command
printenv
help
possible exist command eracfg or similar
...
or mean setup some var if it old ipc withoud dsh
setend dh_keyboard 0
sertev appauto 0
saveenv
reboot
...
after statl it must stop and then
rm /mnt/mtd/* -rf
and set back var to 1
If you so shy, so ask direct help with Teamviewer or other remote prorgam.
By the way, make button photo & share it here!