Hydro-Logic Flowmaster 1/4Inches QC gallonage & filter capacity monitor 0.1-1.0 GP

Gallonage & filter capacity monitor that operates at flow rates between 0.1-1.0 GPM. It accurately tracks the number of gallons of filtered water produced and alerts you when it’s time to change your filters. Showing real time flow rates, displayed in gallons or liters. For use with Stealth-RO200/300 GPD models, or most reverse osmosis (RO) systems with ¼" fittings and flow rates up to 1 GPM.