When water flow is detected, the display shows animated water droplets. The device displays total water consumption and flow rate. Total water consumption is shown in liters (L) and gallons (GAL), with measurements accurate to two decimal places when below 10,000 L (or GAL). The maximum capacity is 999,999 L (or equivalent in GAL), after which the counter resets to 0 for re-measurement. K Value Setting (K SETTING): The K value setting interface appears when entering code 00. This allows adjustment of the K value. Total Flow Display (TOTAL): Upon powering on, the total flow indicator is shown on the main screen. Measurement Range: 999,999 L Temperature Display Range: -99 to 999°C; units can be switched between Celsius (C) and Fahrenheit (F) by pressing the "+" button. Usage Time / Flow Rate Display: When water flows, the screen automatically shows flow rate. When no flow is detected, it displays total usage time in days and hours. Time units can be switched by long-pressing the "+" button. Flow Rate Units: Selectable between LPM (liters per minute) and GPM (gallons per minute) via short press of the mode button. Battery Indicator: A low battery warning flashes to alert the user when battery replacement is needed. The battery status is not displayed when power is sufficient. Water Flow Animation: Visual animation indicates active water flow. System Operation Mode Setting: Powered by three AAA batteries (not included). Main Interface and Settings: Color: White Material: Plastic Package Includes: 1 x Water Flow Sensor 1 x Digital Display Unit Note: The actual product color may vary slightly due to lighting or screen differences. Allowable measurement error is ±1–3 cm.