Control panel with modular design, fully functional, simple structure, convenient operation. Can be widely used in petroleum, chemical, pharmaceutical, transportation, food industries for industrial and commercial applications. Setting units of measurement: In standby mode, or when the current display is active, press CAL + RESET button for 5 seconds to enter unit conversion settings. Press RESET button to cycle through LTR, GAL, PT, QT, LTR to select the desired unit of measurement. The cumulative filling volume will be displayed in the selected unit. Press MENU key for 3 seconds to exit unit conversion settings. Note: This product requires 2 AAA batteries for operation. Includes 2 AAA batteries. Low battery indicator displays "LBat" when battery voltage drops between 2.2V and 2.4V, alerting user to replace batteries. Color: Material: Plastic Specifications: Model: K24 Media: Methanol fuel, chemical liquid, urea water Inlet: 1 inch internal thread Measurement accuracy: 1% Repeatability: 0.5% Maximum working pressure: 5BAR Operating voltage: 2.3-3.3V Flow range: 10-90L/MIN Single count: 0.00-9999.9 Total cumulative count: 0.00-999999.9 Unit: L/L, gal/GAL, pint/PT, quart/QT Single measurement clear function: RESET Package Contents: 1 x K24 Turbine Digital Fuel Flow Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement allowed error is +/- 1-3cm.