Car Brake Fluid Tester - Brake Fluid Diagnostic Test Tool for DOT3 DOT4 DOT5.1

2.2-inch Backlit LCD Screen — The brake fluid detector features a 2.2-inch backlit LCD screen. When brake fluid water content is detected, the water level is displayed on the screen. When the water content exceeds 3.0%, the display turns red and the buzzer emits a "click" alarm sound. The display also has a backlight function, making it usable in both bright and dark environments. Compared to the previous model, this brake fluid detector adds a battery power detection and mute function. Press the battery sensor button, and the screen will display the remaining battery power. When the battery power is low, it will prompt you to replace the battery as soon as possible. Activate the mute button, and the screen will display the mute symbol, and the tester will not emit any sound (including alarm sounds). Why do you need a brake fluid detector? -- When there is too much water in the brake fluid, the pressure transmission will fail. Therefore, to drive safely, we must regularly check the water content of the brake fluid. Our automotive brake fluid detector can determine if the brake fluid needs to be replaced by detecting the water content. Application — The brake fluid tester can accurately test the condition of DOT-3, DOT-4, and DOT-5 brake fluid. There are three types of brake fluid, which can be tested with a single key switch, making it convenient and quick. Suitable for most cars and motorcycles. (Note: If you are measuring DOT fluid, you must use the correct gear gauge. If you are measuring DOT 4 fluid, use a DOT 3 gear gauge; the result will be inaccurate.) Highly sensitive 250mm probe -- The brake fluid tester uses a high-precision sensor, coupled with a 250mm flexible metal gooseneck probe, which can quickly and sensitively measure the water content and make the measurement more stable. The probe is oil-resistant and oxidation-resistant and has a long service life. We offer a 30-day money-back guarantee and a 24-month warranty. Brake pressure is transmitted by the brake fluid. Once there is too much water in the brakes, the transmission stops. Therefore, to drive safely, you must regularly check the water content of your car brake fluid. Our automotive brake fluid detector can determine if the detector needs replacing. Step 1: Install a 9V (6F22) battery in the back of the tester. Step 2: After inserting the battery, press the POWER button to turn it on. All analog bars will turn off and a buzzer will sound. This indicates that the self-test was successfully performed. Step 3: Press the DOT3, DOT4, or DOT5 buttons to change the tester type. Step 4: Insert the probe. At this point, the number represents the fluid proportion. When it exceeds 3%, the LCD backlight turns red, warning that the brake fluid needs replacing. Step 5: Turn off the tester. Battery replacement: The display lights up and a beep sounds. Solution: Replace the batteries. It is recommended to use 9V alkaline batteries (batteries not included). Automatic type: The switch is on, monitoring the cylinder to prevent air from entering. Manual operation: By pressing the handle, a unidirectional siphoning process is achieved.

Operating Principle