【Core Function】: This brake fluid liquid tester pen is mainly used for checking the health of your car's brake fluid, providing you with more accurate test results. What's more, it can remind you to change the brake fluid when necessary, which can effectively avoid traffic accidents.
【Premium Material】: Our brake fluid test pen is made of high quality degree brass metal. It has good oil resistance, which is not easy to be corroded. Therefore, it can be used for a long time. The case is frosted with a good anti-slip design, so it is not easy to fall off when you use it.
【Checking Function】: The water content will be indicated by the number of LED's on the test pen. A red light indicates that the brake fluid needs to be changed, a green light indicates that the brake fluid is in good condition, and a yellow light indicates that the brake fluid is in fair condition.
【Application Scope】: It is suitable for testing the moisture content in DOT-3, DOT-4 and DOT-5.1 brake fluid. It is compatible with AAA batteries, but please note that batteries are not included in the package. Please follow the direction of the arrow on the test pen to open the battery cover.
【Operating Methods】: First, unscrew the brake fluid reservoir and then pull off the brake fluid tester cap. Second, press the button for power on, green LED will light up. Third, insert the tester into reservoir for one second, then the test result will be correctly indicated by LED. Finally, repress the button for power off.
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