For the user, operating this controller is the same as operating the regular machine no extra button is needed to press for frothing. The steam temperature control allows the boiler temperature to be held at a tighter range during frothing. The only difference is that the timer in the Special Edition is a count-up timer. The pre-infusion timer in Blue LED (Special Edition) or in White LED (Special Edition). The functionality of the special edition is the same as the regular version. The countdown timer can also serve as a shot-timer by showing how much brew time remains. Users can also bypass the timer to use the switch on the machine for manual control of the brewing process. This feature allows you to operate the brew pump manually, with the timer as a reference. When the ">" key is pressed, the controller starts the brewing sequence automatically. The pump can be stopped at any time by pressing the ">" key a second time. Each segment can be set by the user with a 0.1 second resolution. This prevents high-pressure water from contacting the dry coffee powder which can create a fast flow channel, ruining the brewing process. It will improve the consistency of the brewing even if the coffee wasn’t perfectly tamped. The countdown extraction timer contains three segments: pre-infusion pulse (Tp), soak (Td), and brew (Tb). The pre-infusion is achieved by pumping a small amount of water into the coffee, holding off the pump for a second to let the water soak in, and then starting pumping for 25 seconds. This kit has the pre-infusion function and the timer can be used as a shot-timer. This kit is compatible with ALL Silvia versions, including the latest V4, V5 (E or M), and V6 (E or M) models. It has all the features as the other listing titled "PID temperature control kit for Rancilio Silvia", with the addition of steam temperature control and an extraction timer that can be programmed with the pre-infusion function. This PID controller kit can control the coffee water temperature, steam temperature, and brew pump. Product Update: Special Edition with a COUNT-UP timer is now available in blue LED and in white LED ( video link)!
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