Usage Tips:Model:K24 Media:methanol fuel chemical liquid urea water Importers:1 inch internal thread Measurement accuracy: 1% Repeatability: 0.5% Maximum working pressure:5BAR Operating voltage:2.3-3.3V Single count:0.00-9999.9 The total cumulative number:0.00-999999.9 Unit:L / L, gal / GAL, pint / , quart / Single measurement cleared:RESET Setting units of measurement: In the standby mode, or raise the amount of current display state Press CAL + RESET button for 5 seconds Enter unit conversion settings, press 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 Press the MENU key for 3 seconds to exit the unit conversion settings. Note: 1. This product requires 2 AAA batteries, more convenient to use.(Not included batteries) 2. Low Battery Tips, When the battery voltage is 2.2V to 2.4V, display LBat, to remind the user to replace the battery. Flow range:B:0.2-10L/Min Colour:Blue & Black Material:+Stainless steel Package Contents: 1 * 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.