Brake fluid tester pen, automatic brake oil moisture analyzer with 5 LED indicators for DOT3, DOT4, DOT5

High-precision and safe driving – High-quality probe, highly accurate results, maintenance advice, and safe driving on the road. Universal compatibility: The universal probe is compatible with most vehicles that use DOT4, DOT3, and DOT5 brake fluids/oils. Easy monitoring: 3-color LED display, 5 brake fluid levels, easy to read, even at night. No environmental restrictions. Instant results: Results in seconds. Quickly test the quality of your brake fluid and check compliance with regulations. Very easy to use. Application: Convenient for home use, widely used in workshops, garages, and car dealerships.