The BRITA Flow Meter calculates the residual capacity of your filter system, it is easy to program and use with its clear and easy-to-read display. After inputting the relevant filter capacity and by recording the volumetric flow, the BRITA FlowMeter will calculate the residual capacity of your filter system. If the filter capacity is exhausted, the capacity is displayed as negative and flashes. Parallel to this is a timer that displays the recommended replacement of the filter cartridge by flashing the residual capacity after max. 12 months. This ensures that the filter cartridge is changed on time.