Also, I think we can confirm that the remote control uses the Zigbee wireless protocol. There is a Zigbee controller board with a built-in antenna that is located on the bottom side of the main board, at the middle-front of the case. Behind the LCD display.
Looks like this:
https://sg.rs-online.com/web/p/rf-ics/6665748
Looks like this:
https://sg.rs-online.com/web/p/rf-ics/6665748
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