Develop on my own question

[mottibz]

1. no firmware inside. you can download our KCS firmware begin use KC868-AG, here is KCS firmware online guide: https://www.kincony.com/esp32-kcsv2-firmware.html
2. we have arduino sample source code, you can check at forum: https://www.kincony.com/forum/forumdisplay.php?fid=30
3. sorry, not have ONLY IR version, cost almost same.

Hello, Thanks for the information.
- I see in the firmware documentation that you only support up to 32 fixed IR commands that I have to teach the controller, which is not enough if you want to fully control an AC unit and TV. Best would have been to support something similar to what Tasmota does.
- As outlined here, the Arduino code is very minimal with limited control, as the only IR control I have in it is to ask the controller to execute command X (between 1 to 32). 
- Is there a way to get the firmware source code and adapt it to my needs? I will be happy to share it back
Thanks!