1-TDS Electronic controller to guarantee water quality and flash the filter as it needed. 2- Power input: 110-240 VAC. ... Electronic 3.8 Inch LCD display, microprocessor controlled, TDS function, filter replacement notification, working state display, flushing control, working temperature ... by air or 4 to 7 weeks by sea. Household water treatment system,reverse osmosis,pure water treatment,BWT-GTC