PID KIT for Gaggia Classic Pro & Classic & Home w/ pre-infusion [KIT-GGP] - $199.50 : Auber Instruments, Inc., Temperature control solutions for home and industry
PID Retrofit KIT for Gaggia Classic - European Model RI9403 [KIT-GGX-EU] - $149.50 : Auber Instruments, Inc., Temperature control solutions for home and industry