RGEEK Brake Fluid Tester Pen 5 LED Indicators Display Auto Brakes Calibrated Auto Brake Diagnostic Testing Tool for DOT3 DOT4 Brake Fluid

Product introduction: The brake fluid detection pen measures the change of the brake fluid moisture according to the change of conductivity. It clearly shows the degree of moisture content through light-emitting diodes. High moisture content will cause the boiling point to decrease, affect the brake performance, and will corrode the brake master cylinder and the sub-pump, causing rust and stuck. Red light indicates that the brake fluid needs to be replaced immediately; green light indicates good condition; yellow light indicates that the condition is acceptable, but it is about to be replaced. This product can be used by car 4S shops and car owners, the product operation is simple, accurate and fast! Detailed explanation of the meaning of the indicator: Green: The battery is OK, that is, there is no water in the brake fluid Green/yellow: The water content in the brake fluid is less than 1%, the brake fluid performance is good, can be used with confidence Green/Yellow/Yellow: The water content in the brake fluid is about 2%, and the brake fluid can continue to be used Green/Yellow/Yellow/Red: The water content in the brake fluid is about 3%, it is recommended to replace the brake fluid Green/Yellow/Yellow/Red/Red: The water content of the brake fluid is at least 4%, and the brake fluid needs to be replaced immediately. Tips: After each test, wipe the liquid part of the test point with a dry cloth or paper Package including: 1* Brake Fluid Test Pen