The infamous Fuji PXR PID controller! This is the device everyone uses for espresso machine PID control. Easy to install and set up, the Fuji PXR is the best way to control brew temperatures. This particular model is the 240VAC 50/60Hz PXR3-RCY1-4V and is intended for for thermocouple output. When used with the RS1 Solid State Relay you are ready to go.