This medium series is an excellent choice of high-performance water purifying system. The self-flushing of the reverse osmosis membrane, extend the life of RO membrane. These systems are Level II password protected for all the parameters setting, and forbid any unauthorized settings change also It has multiple alarm functions. - Automatic microcomputer controlling system, multi-menu operating, real-time animation mode display. - Super-large LCD (Resolution:240x128, dimension:106x57mm) display, display the system running state and various parameters intuitively. - 3 way on-line sensor, detect the quality of feed water, RO water, or ultrapure water respectively. - System sterilization procedure, achieve the disinfection of ultrapure water’s pipeline.