Sunset

The Luna-HE temperature differential controller from Sunset is a compact solution for solar systems with a collector array and a storage tank, solar loading of a swimming pool or simply as universal differential control. The controller has a frost protection function, which can be activated via a microswitch. Furthermore, it is equipped with a LCD pictogram display showing the relevant temperatures and operating conditions. All operating parameters can be precisely set by means of a touch key. The controller can control all high-efficiency pumps with PWM or PWM-inverted signal in a speed-controlled manner.