[hamix]

The TX led on the RX board blinks when a data packet is sent to the WD units, but as this data packets are relayed as soon as they are received, this led can also be used to check if we are receiving data from the TX units.

I haven't planned to use WD unit so the TX_LED circuit was not build.
@werk, what about the second matter?
Why outer temp and humidity are shown after TX unit was off?