5Pcs/lot DUOYI DY23 Car Brake Fluid Tester Accurate Test Automotive Brake Fluid Water Content Check Universal Oil Quality DOT 3/4/5

Operation Manual:

1. Install one 9V(6F22) battery at the back of tester.

2. After inserting the battery, press POWER button to turn on the tester, all LEDs lights turn on with buzzer sounding, which indicates the product self-test is successful.

3. Press SELECT button, it will locate DOT3 model automatically.

4. Each time you push the SELECT button, it will recycle from DOT3 to DOT4 to DOT5.1 with the indicator LEDs.

5. Immerse the probe into brake fluid and you will get different colors of LED lights, they indicate: 

Green Light: indicates the brake fluid water content is below 1%

The First Yellow Light: indicates the brake fluid water content is approximately 1.5%

The Second Yellow Light: indicates the brake fluid water content is approximately 2.5%

The First Red Light: indicates the brake fluid water content is approximately 3%

The Second Red Light: indicates the brake fluid water content is more than 4%

6. Press POWER button to turn off the tester.

Package include:

5x Brake fluid tester

5x User manual (in English)

battery not include

Note:

1. After use, please clean up the residual stains on the probe that might affect the test.

2. If in use for a long time, you'd better remove all batteries and store in a dry place at a normal room temperature.

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