Control panel with modular design, fully functional, simple structure, convenient operation. Can be widely used in petroleum, chemical, pharmaceutical, transportation, food to be industrial and commercial. Setting units of measurement: In the standby mode, or raise the amount of current display state CAL + RESET button for 5 seconds Enter unit conversion settings, the RESET button Followed by LTR → GAL → PT → QT → LTR choose the unit of measurement, While the cumulative filling volume displayed in the current unit of measure conversion after the MENU key for 3 seconds to exit the unit conversion settings. Note: This product requires 2 AAA batteries, more convenient to use, this product comes with 2 AAA battery replaceable battery Low Battery Tips When the battery voltage is 2.2V to 2.4V, display LBat, to remind the user to replace the battery. Color: Blue & White Material: plastic Specifications: Model: K24 Media: methanol fuel chemical liquid urea water Importers: 1 inch internal