ALEX DUETTO IV PLUSIn the past few years a few double boilers machines have come to market. Yet people continued to ask when will a dual boiler,>TOTALLY PID controlled machine, with an E61 group be introduced? Well that time has come say hello to the NEW Alex Duetto II by Izzo. So what is different about the NEW Duetto II? All functions are now controlled by the PID. The following is a list of functions controlled by the PID: Easily changes the machines operational mode