Following manual I successfully mapped my remote with TV Box (How to configure IR remote control)
But on remote there is additional buttons: TV VOL+, TV VOL-, TV Power, TV Input. Is it possible using those buttons and CEC/CoreELEC/Kodi to control TV volume, power and input. So far I didn’t found anything what can help. Thanks!
One suggestion would be a Logitech Harmony Remote:
Another suggestion a “Sunray” remote. Many TV Boxes come bundled with this type of remote, having some basic TV control learning capability by use of the TV remote, or an MX3 Air Mouse, which has similar learning capabilities with the advantage of a keyboard and more recently also voice control.