Features: 3 types to select, choose different type according to your needs. Stable performances, large flow, high precisions and fast response. Made from quality material, leakproof, wear resistant, high sensitivity. The product is mainly used for testing oil, the cover is made from aluminum alloy material. Good pressure resistance, can bear pressure up to 30kg. Specifications: Material: Aluminum Alloy Interface: DN8, DN10, DN15 Voltage: 5-18VDC Inner Diameter: 11.75mm/16.3mm/19.1mm Thread Length: 12.4mm/12.5mm/10.27mm Flow Range: 30-300L/H±1%; 40-800L/H±1%; 50-1200L/H±1%(Liquid is Water) Water Pressure Resistance: Lower Than 1.75MPa Pulse Frequency: Hz=[1.5xQ]±1%, Hz=[2.3xQ]±1%, Hz=[2.4xQ]±1% High Level Output Pulse: Large Than DC4.5V(Input DC5V) Output Pulse Duty Ratio: 50%±10% Working Current: 15mA(DC5V) Size: Approx. 61x67.5mm/2.40x2.66in Interface: DN8/DN10/DN15 Package Includes: 1x Fluidmeter note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.