Description
Brake fluid tester pen with 5 LED indicator lights.
Features & Specs:
You can use it to check the condition of Dot 3 & Dot 4 brake fluid.
5 LED lights display the percentage of moisture content in brake fluid.
Auto power off
Need 1 AAA battery (not included)
Instructions:
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 a lower boiling point, affect braking performance. Red indicates the brake fluid needs immediate replacement, green represents the good condition, yellow indicates the state is acceptable but soon replaced.
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