Features: High Accuracy Safety Driving --- Private high quality probe high precision result, remind you to do routine maintenance and escort your driving. Universal Fit---Universal probe in common shape for most vehicles using DOT4, DOT3, Dot5 brake fluids/fluid/oil. Easy CONFIR --- 3 LED Display Color Screen 5 Level Brake Smooth Status, easy and clear reading under sunshine or at night. Never limited by the environment. Instant Result --- only takes seconds to know the results, test car brake fluid quality quickly to check whether it is qualified, very easy to operate. Scope --- It is very beneficial for personal use and widely applied in individual workshops, factories and dealership repair shops. Specification: Name: Brake Fluid Tester Material: ABS Voltage: 12V Black color Display: three color LED display Battery: 2 AAA batteries * Test range: DOT3, DOT4, DOT5 Be applicable: All Vehicles Operating Temperature: -20-60 Item Size: 55*25*19mm 5 STATUS LED EXPLANATION Red: brake oil with at least 4% water content Red: brake oil with about 3% water content Yellow: Brake oil with approx. 2% water content Green/Yellow: Brake oil with less than 1% water content Green: Without water good condition LED display Explanation: Green: The current test brake oil is in good condition. Green yellow : Brake oil with less than 1% water content, brake oil performance is good, you can use it with confidence. Green/Yellow/Yellow: Brake oil with about 2% water content, still able to work. Green/Yellow/Yellow/Red: Brake oil with about 3%, it is recommended to replace the brake fluid. Green/Yellow/Yellow/Red/Red: Brake oil with at least 4%, replaced immediately. Use: 1. Turn on the brake fluid tester by applying the button on the top. A green light should come on. If the light does not come on, it may be time to change a battery 2. Unscrew the lid for the brake fluid reservoir, and remove the cap from the brake fluid tester 3. Immerse test probes in brake fluid and LED lights indicating percentage of water in brake fluid 4. After the test, remember to screw the reservoir of the brake fluid reservoir after classified 5. The tester will automatically power on after 12 seconds of inactivity 1 * Brake Fluid Tester Pen