Features: Accurately detect brake fluid moisture content with high precise sensors, ensuring driving safety through quick testing for DOT3/DOT4/DOT5 fluids. Compact plastic design features auto shutoff function, LED condition indicators, and water resistant construction for reliable performances in 0~50℃ environment. Essential for car owners maintaining vehicle safety, mechanic performing professional inspections, and auto enthusiasts monitoring brake system health. Ideal for home garage checks, automotive workshops, and emergency roadside assessments requiring quick fluid quality verification. This universal brake fluid tester combines portability with lab grade accuracy for comprehensive vehicle maintenance solution. Specifications: Component:Plastic Size: Approx.5.9inch/15cm Color:Black Model: YM-C03 Working current: 4~30mA Working voltages: 1~1.5v Working temperature: 0~50℃ Package Includes: 1pcs Automotive Brake Fluid Tester note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.