Seroun’s Solid State Controller SSC-Unit is not only a compact plastic package type thyristor regulator but also has unique system which can be able to phase control the heater power by direct utilizing of DC 4~20mA signal from the temperature controller as a control power. And this Unit has a combined functions of a conventional SSR and thyristor regulator. With this we have realized an ultra-low price and a leading-edge technology so we can provide our customers an utmost competition in industry.