Brake Fluid Tester, Brake Fluid Pen with LCD Screen, Brake Fluid Tester, DOT3 DOT4 DOT5.1 Brake Fluid Moisture Tester

Dual audible and visual alarm: When the brake fluid tester's backlight turns green: when the brake fluid detector detects a value between 0 and 2%, this indicates that the brake fluid is still usable. The backlight is yellow: when it is between 2 and 3%, the buzzer will sound slowly; please replace the brake fluid. Red backlight: when the detection value exceeds 3%, the buzzer will sound rapidly; please replace the brake fluid immediately. Note: Clean the probe before use, otherwise it will affect the results. Three types of brake fluid detectors: This brake fluid tester pen can be used to detect DOT3, DOT4, and DOT5 brake fluid. (DOT3 is the most common type of brake fluid used by everyday drivers, and it's also the default brake fluid type when the brake fluid tester is turned on; DOT4 has a higher boiling point and is used in racing and police cars. DOT5 is mainly used in special vehicles such as race cars, but is rarely used in passenger cars.) High quality and high sensitivity: This brake fluid tester is equipped with high-quality probes, which have high sensitivity and a fast response. The moisture content ranges from 0% to 4%, representing the anhydrous and water content. Car owners can quickly determine if the brake fluid moisture content is within acceptable limits. It is made of ABS material and is shock and scratch resistant. If there is no operation within 5 minutes, it will automatically shut off. Easy to use: After installing the battery (2 x 1.5V AAA batteries not included), gently remove the cover and press and hold the power button for more than one second. Once the buzzer beeps, the screen will light up and the type of oil to be tested will be selected. Insert the test probe into the brake fluid and immerse it to the correct fluid level, with a maximum depth of 2 to 5 mm. Customer satisfaction: If the packaging of the brake fluid tester you receive is damaged, please contact us and we are always available to help you. Note: Due to different lighting and screen settings, the item's color may be slightly different from the picture. Due to different manual measurements, please allow a 1-2 cm difference.