i find it bizarre you dont understand the ad! lol
Yes, me too.
That's a good idea for two man set ups though. I'm always confusing which hose reel belongs to which pump and controller.
Last week I got the ladders off, went over a garage with my hose, and my water supply stopped mid-way through cleaning.
It turned out that Wor Lass had finished, confused which flow controller she was on and turned mine off.
That annoyed me 'cos I had to climb back onto the garage roof and start shouting, "Oi, where's me water?"
Different coloured hose leading to the hose reels could solve that problem.