Most of the water ionizer for home use is based on 3,5,7 plates platinum coated titanium electrode, 1 or 2 filters (4,000 liter purification). Double Cross Auto Cleaning System. All the elctrode is made of platinum plated titanium. 1)Front loading filter exchange(Front door) 2)Best ORP(-700mV), pH 3)170W SMPS: Stable in any circumstance, No over heat, No energy consumption in stand-by state.