Deepuro Reverse Osmosis Water Filtration System RO Water Filter System Under Sink Tankless 400GPD with 5-Stage Filtration, Water Purification RO Units, Filters Life Monitor & Smart Touch Panel. See photos attached as well as our policy should items have unidentified issues below. The smart control panel has filters life reminder which can show you when to change the filters. Automatic flushing function which reduce secondary pollution. Every Deepuro Reverse Osmosis System has gone through strictly function test before package.Please unplug the cork in the filters before installation.