Features:

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%, replace the brake fluid immediately
Notice: The above data is for reference only
Battery: AAAA X1(not Including in package), battery cover is opened in the direction indicated by the arrow.

Notice

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.