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JDiag FT123 Brake Fluid Tester with 5 LED Mini Indicator For DOT3/DOT4

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  • Description
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JDiag FT123 Brake Fluid Tester is used to detect the quality of brake fluid, brake fluid moisture percentage of the test results will be showen by 5 LED lights.


According to the change in conductivity to determine the water changes in brake oil, through the light-emitting diode, FT123 clearly shows the degree of moisture, high moisture content will lead to lower boiling point, a ecting the braking performance. Red light means the brake oil needs to be replaced, green light means the oil state is good, and yellow light means the oil state is acceptable.



Powerful function with ease operation
Accurate measurement, safety;
Detect all types brake oil
Automatically power on
DOT 3/4/5 Brake Fluid Testable


Product Instructions

Green: Battery OK/State Good
Green/Yellow: Water content less than 1%
Green/Yellow/Yellow: Water content close to 2%
Green/Yellow/Yellow/Red: Water content close to 3%, recommended to replace the brake fluid
Green/Yellow/Yellow/Red/Red: Water content higher than 4%, Dangerous, replace the brake fluid immediately
Notice: The above data is for reference only
Battery: AAA X1(not Included in package), battery cover is opened in the direction indicated by the arrow. 


If press the power button then green LED does not light up, need to replace the battery
Wash the test probe with water after use
Please do not expose the brake fluid in the air for a long time, it has a strong water absorption


Prepare before testing
Unscrew the lid of the brake uid reservoir and unplug the pen from host. Immersed the test probe into the brake uid tank


Water content testing
Press the power button then green LED will light. hold for 1s, the test results will be showen by the LED lights, test finish, FT123 will automatically shut down after 12 seconds.



1pc x JDiag FT123 Brake Fluid Tester(Not includes the AAA battery



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