Since its foundation in 2004, Green System created an integrated type of refrigerator pressure gauge and pressure switch. It was added by sensor and digital technology. As a result, we dreamed of export of our products while more than 90% of refrigerator parts industry was covered by foreign companies such as Saginomiya (Japan), Alco (USA), Danfoss and Johnson Control.In January 2007, we specified our business by trademark patent registration under DIGIPRESSURE,and in May 2007, we finally achieved in 3 years by the patent registration with &＃39;refrigerator control digital multi-pressure switch.&＃39;DIGIPRESSURE of Green System is the transformation of mechanical parts, and digitalization of existing mechanic pressure gauge and pressure switch. We integrated 3 pressure gauges, 1 dual pressure switch, 1 oil pressure switch and 2 fan control switch in one device with remote monitoring and control available. It is the core safety device for refrigerator that has simplified control function and that employs high precision pressure censor for the first in the industry. It is easy installation and application with economic price compare with other products. It is compatible with low and high pressure and micom processor. It is designed to have 1~4 sensors in multi-pressure switch and to input decimal unit of multi-pressure.As sensor detects pressure on real-time basis, it marks by decimal unit in LED and LCD for easy and rapid value reading. Data communication, which was not available in existing analogue device, has been added to bring facility automation and remote control network feature to DIGIPRESSURE.