Digital Brake Fluid Tester with LCD Screen for DOT3 DOT4 DOT5.1 Moisture Content Analyzer Hydraulic Oil Checker Features： 1、High Compatibility: This tester is designed to test brake fluids of various types, including DOT3, DOT4, and DOT5.1, ly meet the needs of the driver. 2、Quick Testing: This car brake fluid tester quickly detects the water content in brake fluid, allowing for an instant assessment of its quality. 3、LCD Display: The detector features an LCD screen that displays the test results in a clear and easy to understand manner, making it convenient to use. 4、Backlight Function: Equipped with a backlight, this analyzer can be used in environments with poor lighting, ensuring accurate readings. 5、Alarm Reminder: Detector has an alarm feature that alerts users with sound and flashing screen when the brake fluid needs to be replaced, ensuring timely maintenance. Specification： Item Type: Car Brake Fluid Tester Material: ABS Product Model: TM280A Low Battery Warning: Yes Alarm Warning: Yes Display Function: HD color screen with backlight Automatic Shutdown: 6 minutes no operation automatically shut down Test Results: <0.1% indicates very high purity <1% indicates good condition, < 2.5% indicates fair condition >3%-4% indicates that the brake oil needs to be replaced Battery: LR03 aaax4 (shipped without battery) Application: For DOT3 DOT4 DOT5.1 Package List： 1 x Tester 1 x Packaging Box  1 x User Manual