Question about Gardena Irrigation Control Select

It would fit, yes. If you want it between the tap and the computer, be wary. I found in the past that some computers didn't react well to having that arrangement, and I could only get it to work with a metal two way valve. Maybe was just something about my set up.

If you have it below the computer - between it and hte rest of your system, there shouldn't be any problem at all.