Auber PID Temperature Control Retrofit KIT for Rancilio Silvia with both Coffee & Steam ControlThis PID controller kit has all the features of our other listing titled "PID temperature control kit for Rancilio Silvia"with the addition of steam temperature control. The steam temperature and water brewing temperature are controlled by the same controller. For the user, operating this controller is the same as operating the regular machine; no extra button is needed to press for frothing. When the steam switch is turned on, the on off temperature