LED Brake Fluid Tester Pen, DOT3/DOT4/DOT5.1

Brake fluid tester pen with 5 LED lights, supporing DOT3, DOT4, DOT5.1 brake fluid, best for all vehicles detection.

Specification:

Tips: How to use a LED brake fluid tester pen?
The brake fluid tester pen is mainly composed of a high-precision probe at the tip of the pen, 5 LED lights at the pen body, and an internal AAA battery.

1. Press the power key before test and check whether the battery status is OK. If the red LED light flashes, it means the battery needs to be replaced. If all the lights are on, remove the battery, put it back, and restart the brake fluid tester pen again.
2. Remove the pen cap and insert the probe directly into the brake fluid for testing. Turn the LED lights to you for easy viewing of the results.
3. The test results are as follows:
   0% - Green: Battery is OK, or NO water is detected in the brake fluid.
   ＜1% - Green/Yellow: Brake fluid is OK.
   2% - Green/Yellow/Yellow: Brake fluid is OK.
   3% - Green/Yellow/Yellow/Red: Brake fluid is NOT OK. It's time to change brake fluid.
   ＞4% - Green/Yellow/Yellow/Red/Red: Brake fluid is NOT OK. Must urgently change brake fluid right now.
4. Power off the brake fluid tester pen.

After testing, wipe off the brake fluid on the probe with a dry cloth or paper towel, which helps to extend the life of the test pen.