flowmetersStarting water pressure : Less than 0.1MpaWorking flows : 0.5-6L/minutesOperating : 3.5-12VDCOperating current : 0.51.5MAOutput voltage : DC 5VLength : approx.3.5x2.8x5.4cm/1.38x1.10x2.13in flowmeters Small size : Portable Easy to install : Simple installation Versatility : Passes a wide range of liquids Low maintenance : Reduced wear and tear Responsive : No mechanical inertia Item Weight 7.1 ounces Manufacturer KZYIHVMY Item model number KZYIHVMY Batteries required No Package Dimensions 0.39 x 0.39 x 0.39 inches