The Hydrofast UB200D Tankless Reverse Osmosis Under Sink Water Filter System provides fast, clean, room-temperature water with 800 GPD output and a 2.0 L/min flow rate. It fills an 8 oz glass in about 5 seconds, making it ideal for homes, offices, kitchens, and daily use. Its advanced 9-stage PCF + RO filtration system features a 0.0001μm reverse osmosis membrane to help reduce TDS, fluoride, chlorine, lead, heavy metals, and over 1,000 common impurities. The smart LED faucet shows real-time TDS levels, filter life status, and system alerts for easier monitoring. With a tankless, space-saving design, 2.5:1 pure-to-drain ratio, pressure-reducing valve, leak monitoring, and quiet operation under 55 dB, the UB200D combines powerful RO filtration with smart, convenient water quality control.