The Quick Response Expansion Valve (QREV) and Precision SuperHeat Controller (PSHC) create a closed-loop solution, forming an electronically controlled expansion valve to maximize evaporator efficiency. Save energy by reaching targeted superheat faster and controlling the valve more precisely as load conditions vary. Unique silicon-based micro-electromechanical system technology eliminates valve wear and stepper motor failure. The PSHC comes with an onboard pressure sensor and is loaded with 17 approved refrigerants for easy commissioning. Its wiring harness includes a temperature sensor.