Features： 1、High Precision Testing: The brake fluid moisture tester offers high precision testing with an accuracy of up to 0.2%. With 21 levels of test results displayed on a color LCD screen, users can get a comprehensive and precise understanding of their brake fluid condition. 2、Automatic Shutdown Function: This brake fluid tester is engineered with an automatic shutdown function. It activates after 5 minutes of inactivity, saving battery life and extending the device\u0027s lifespan. 3、Adjustable Calibration: The device comes with an independent fine-tuning calibration hole for users to adjust the calibration accuracy, ensuring the most accurate results. 4、Battery-Powered: Powered by two AA batteries, the tester is portable and convenient. It\u0027s perfect for use in different locations, whether you\u0027re at home, in a garage, or on the go. 5、Wide Compatibility: The automotive brake fluid tester is capable of detecting five types of brake fluids: DOT3, DOT4, DOT5.1, ENV4, and ENV6. This broad compatibility makes it an essential tool for most vehicle owners and mechanics. Specification： Description: This brake fluid tester features an easy-to-use operation system with buttons for starting a self-test and selecting the type of oil to be tested. Upon pressing the start button, it conducts a self-test including checking if battery voltage is sufficient. The device also has an automatic shutdown feature that activates if there are no key operations within 5 minutes. To use, simply press the oil selection button, choose your oil type, and immerse the metal probe into the oil you want to test. Following this, wait for your results on its display screen. Features: High Precision Testing: The brake fluid moisture tester offers high precision testing with an accuracy of up to 0.2%. With 21 levels of test results displayed on a color LCD screen, users can get a comprehensive and precise understanding of their brake fluid condition. Automatic Shutdown Function: This brake fluid tester is engineered with an automatic shutdown function. It activates after 5 minutes of inactivity, saving battery life and extending the device's lifespan. Adjustable Calibration: The device comes with an independent fine-tuning calibration hole for users to adjust the calibration accuracy, ensuring the most accurate results. Battery-Powered: Powered by two AA batteries, the tester is portable and convenient. It's perfect for use in different locations, whether you're at home, in a garage, or on the go. Wide Compatibility: The automotive brake fluid tester is capable of detecting five types of brake fluids: DOT3, DOT4, DOT5.1, ENV4, and ENV6. This broad compatibility makes it an essential tool for most vehicle owners and mechanics. Specifications: Main Material: ABS Measuring Range: DOT3, DOT4, DOT5.1, ENV4, ENV6 Battery: 2 * AA alkaline batteries (not included) Product Color: Blue Package Information:? Package Size: 25*15*4cm/9.84*5.91*1.57inch Package Weight: 250g/0.55lb Package List: 1 * Brake Fluid Tester Package List： 1 * Brake Fluid Tester