Hi
Hillz,
I will try to answer some of your questions.
With the Poweradjust 2 you can control the voltage for your pump or the RPM's of your pump. This way you control the pump speed and subsequently the flow the pump produces. It acts exactly the same as any fan channel on Aquaero, except that it has more power so it is more suitable for running higher loads (pumps).
The only difference between the Normal and Ultra versions is that Ultra version can regulate the output according to the temperature it receives over the temperature sensor (if installed).
Both versions come with one output, one flow sensor input and one temperature input.
I don't know if Poweradjust 2 works with Aquaero 4, but it can be connected to Aquabus or over USB.
Basically, you can connect it over USB, set it up and then just leave it running by itself, it is a mini-controller in it self.
To set it up you actually use Aquasuite 4.72.
All the necessary cables come with the Poweradjust module, in the box you will find 1 adapter cable for Laing DDC pumps, 1 USB cable and 1 three pin fan cable which you can use to connect the Poweradjust 2 over Aquabus.
Kind regards,
Boris.