Potentiometer direct connected to 2KM Long Range module

Hello,



Do you guys have an idea of a simple way to use a potentiometer directly (or with just few simple electornics) to the 2KM long range module?

I tried to connect the potentiometer (0-5v) on the transmitter and I was thinking it will get the same signal (0-5v) on the receiver. But it just not shows same voltage and works only after a certain voltage input.



Does it just transmits digital input signal, or can we direct input analog voltage and get same on the receiver without use an arduino or other more complex electronics?



If you know a simply way to do it or if you have any sort of electrical schematic you can share, I will be deeply grateful

Let me know and thanks in advance for your availability