I am currently designing an electrical system for my campervan and I plan to install a Cerbo GX to monitor batteries, tanks etc. I have recently purchased Fresh & waste water tanks with SP5/40 and stud sensors respectively. Now the stud sensors are connected with 2 wires (white and brown) which I imagine will plug in to the Cerbo's tank slot as normal. The problem with the SP5/40 is that there are 4 wires which is for each probe. Not only do I not know which wire correlates to which probe/level but I don't know how this would be connected in to the Cerbo. Would you have to connect in to 2 tank slots in the Cerbo?