Aquaniveau Autotop Up

[Ren&Stumpy]

I have aquired a aquaniveau topup unit from a mate, it has the control box, and two float switches but nothing else, so i need a pump for it.

I have no idea what pump to use the control box is obviously 240V but not sure what the output is anyone know? I was thinking of a 12V submersible pump off ebay but not sure if this unti converts to DC as i have no instructions any help appreciated