PID Retrofit KIT for Rancilio Silvia w/ pre-infusion
[KIT-RSPb]

I upgraded to the Auber controller after using our Sylvia expresso maker for two years. We had taken to turning on the steam switch to get the boiler hot, then valving off steam till the flow looked "about right" for making expresso. Our hit rate for a good expressor was no better than 75%, and it was a fiddly process. With the Auber controller, every expresso shot comes out right, and we know exactly when the boiler is hot enough. Took me a couple hours to do the install, but the instructions were quite clear and the system worked perfectly as soon as we figured out to leave the Sylvia brew switch turned on.