Sun Electronic Systems has been manufacturing ATE Process & Temperature Controllers and Temperature Test Chambers since the 1980's. We specialize in applications that involve very complex temperature cycling programs; all of which are covered by the EC Series Environmental Test Chambers. We offer expectorant based (LN2/LCO2) temperature test chambers as well as a refrigerated model test chamber. The PC Series stand-alone Process Controllers allow precise control and monitoring of environmental variables such as temperature, humidity, vibration and pressure. Our temperature test chambers and stand-alone process controllers use a microprocessor based, digital PID controller to precisely control chamber temperature or process variables when using our process controllers.