Control panel with modular design, fully functional, simple structure, convenient operation. Can be widely used in petroleum, chemical, pharmaceutical, transportation, food, industrial and commercial applications. Setting units of measurement: In standby mode, or during current display, 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 unit of measurement. The cumulative filling volume will be displayed in the selected unit. Press the MENU key for 3 seconds to exit the unit conversion settings. Note: This product requires 2 AAA batteries for more convenient use. The product includes 2 AAA replaceable batteries. Low battery indicator: When the battery voltage drops to 2.2V to 2.4V, the display shows "LBat" to remind the user to replace the battery. 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 / , quart / Single measurement reset: RESET Package Contents: 1 x K24 Turbine Digital Fuel Flow Meter Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. The measurement allowed error is +/- 1-3cm.