Brake Fluid Tester Pen 5 LED Car Vehicle Auto Automotive Testing Tool Car Vehicle Tools Diagnostic Tools
Brake fluid detection pen is based on the change in conductivity to determine the moisture change brake fluid. It shows clearly the extent of moisture contained by the light-emitting diode, high moisture content will lead to lower boiling point, affect braking performance. Red indicates the brake fluid needs immediate replacement, green represents good condition, yellow indicates the state is acceptable but soon replaced.
1. the green LED lights = water content in the brake fluid H2O <1.5%, brake fluid qualified
Five LED indicators show the test results more accurate.
Green: Battery OK, that is, brake fluid does not contain water
1* brake fluid tester