7 Stage Purification, RO+UV+TDS Controller With MAT (Mineral addition technology), with power full pump, SMPS & 80 GPD high-quality membrane. 100 GPD Pump, 24 VDC 2A SMPS, Good quality RO Membrane works up to 1500 ppm TDS. TDS control valve to adjust the level of minerals in pure water. Crystal clear highly pure output water.