Control panel with modular design, fully functional, simple structure, and convenient operation. Suitable for use in petroleum, chemical, pharmaceutical, transportation, and food industries for industrial and commercial applications. Unit of measurement settings: In standby mode or during current display, press CAL + RESET for 5 seconds to enter unit conversion settings. Press RESET to cycle through LTR → GAL → PT → QT → LTR to select the desired unit. The cumulative filling volume will be displayed in the selected unit. Press MENU for 3 seconds to exit unit conversion settings. This product requires 2 AAA batteries (included) for convenient use. Battery replacement is supported. Low battery indicator: When battery voltage drops to 2.2V–2.4V, "LBat" will be displayed to remind the user to replace the batteries. Color: Blue & White Material: Plastic Specifications: Model: K24 Media: Methanol, diesel fuel, kerosene, chemical liquids, urea water Inlet: 1 inch internal thread Measurement accuracy: ±1% Repeatability: ±0.5% Maximum working pressure: 5 BAR Operating voltage: 2.3–3.3V Flow range: 10–90 L/min Single count: 0.00–9999.9 Total cumulative count: 0.00–999999.9 Units: L/L, gal/GAL, pint/PTS, quart/QTS Single measurement reset: RESET Package Contents: 1 x K24 Turbine Digital Diesel Fuel Flow Meter Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement error allowance: ±1–3 cm.