Rancilio Silvia PID Espresso Machine with PID - the Secret to Perfect Espresso Shots - YouTube
PID Retrofit KIT for Rancilio Silvia w/ pre-infusion [KIT-RSPb] - $189.99 : Auber Instruments, Inc., Temperature control solutions for home and industry
Rancilio Silvia Auber PID install temperature control December 2020 boiler temperature espresso - YouTube