Hi,
I did a review of a HB200A radar module, which should be more or less the same:
It's powered from 5V DC and it's output is completely analog.
The output signal is something like this:
U_out(x) = 50mV*cos(2*pi *2*x/lambda)*(10cm/x)² + 15mV
The output amplitude is about 50mV on an offset of +15mV @ a distance of about 10cm.
From there on the amplitude drops with 1/x².
Greets,
Karl