Feature:
1. Protect you and your car: Check the health of DOT3, DOT4 car brake fluid, the brake fluid test pen can be used as a digital brake fluid tester, suitable for determining the quality of brake fluid. Safe for your driving
2. Practical: Press the button, insert the tester into the water tank for one second, the tester result will be correctly indicated by the LED. Press the button again to turn off the power.
3.5 LEDs: 5 LEDs show the percentage of moisture content in the brake fluid, the test results are more accurate
4.USEFULL: Support DOT3 DOT4 brake fluid, brake fluid tester is suitable for determining the quality of brake fluid.
5. Easy to carry: Small size, can be put in your pocket, AAA 1.5V battery (not included). Automatic shutdown after approximately 15 seconds of inactivity

Specification:
Model: car brake fluid detection pen
Battery: AAA 1.5V (not included)
Suitable for: DOT3/DOT4 testing
5 LEDs indicate water % in brake fluid:
0% LED: Moisture content in brake fluid
1%LED: water content, H2O≤1%, brake fluid higher than standard
2% LED: water content, H2O≤2%, still usable
3%LED: water content, H2O≤3%, it is recommended to replace the brake fluid
4% LED: water content, H2O ≥ 4%, brake fluid must be replaced
NOTE: The test probe needs to be cleaned with a dry cloth or paper after each test.

Package Included:
Detection pen*1