The PCT filter (MPF1) removes sand, rust, suspended materials, residual chlorine, other sediments, and bad odor from water to improve the taste and quality. Dual Filter: This tankless RO system is equipped with a dual filter design, ensuring the finest filtration, while prolonging the filter life. Light indicator display: This system display panel will indicate if the system is on and working. Innovative Tankless Design: The tankless design ensures the safety of your family's drinking water. The tankless design minimizes the chance of bacterial growth and wasted wat Package contents: RO Tankless System (1), Smart Faucet Dispenser (1),Mist PCT Filter (MPF1) preinstalled (1), Mist RO Filter (MRF3) preinstalled (1), Accessory box with all the accessories needed for installation and Instruction Manual (1). The filtration accuracy is 0.0001um.