OurLeeme Brake Fluid Tester, 5 LED Auto Diagnostic Brakes Testing Pen Portable Vehicle Tester Universal Car oil for DOT3 DOT4

【Superior Materials】: This brake fluid tester is oil-resistant, oxidation-resistant, and corrosion-resistant. The casing is made of matte black plastic, offering superior grip and a comfortable feel. Changes in electrical conductivity determine the moisture content of the brake fluid. 【Easy to Use】: Simply immerse the probe into the brake fluid reservoir to instantly obtain a brake fluid quality reading. The device is wireless, compact, lightweight, and easy to carry. 【LED Indicators】: Five LED indicators display the moisture content of the brake fluid in three colors (green, yellow, and red). Red indicates the brake fluid needs immediate replacement, green indicates good condition, and yellow indicates fair condition. 【Versatile Applications】: This product is very convenient to use, suitable for personal use, and widely applicable in personal repair shops, repair shops, and dealership repair shops. To save power and prevent corrosion, please remove the battery and clean the tester after testing. 【Applications】: This brake fluid tester is suitable for testing the moisture content of DOT-3 and DOT-4 brake fluids. It can quickly detect the health of automotive brake fluid and provide more accurate test results.