Paintball Helmet Accuracy & Universal Probe---High sensitive and accurate probe, can quickly and accurately detect DOT-3, DOT-4, DOT-5.1 brake fluid and get the result in seconds. The gooseneck probe provides detection flexibility, which makes the detection process more elastic and efficient. Instant Reading and Alert---Probe, High Sensitivity + High-Resolution Screen + Audible Alarm, Instant displays results, large backlit screen, easy and clear reading under the sun or at night. Never limited by the environment. After the brake fluid sounds with too much water alarm, it reminds you that you need to replace the brake fluid. High quality and ergonomic design --- Body with good texture, compact size, perfect feeling in the hand. Oxidation-resistant gooseneck surface oils, not easy to corrode. Simple, easy to use control panel. The upper part of the probe with flash you can observe the brake fluid color if necessary. Energy saving and environmental protection---This car brake fluid tester with function auto shut-off automatically turns off after 5 minutes of standby. Works only with 2 AAA 1.5 V batteries (not included). Energy efficient and easy to use. The brake fluid tester provides safety for all drivers and passengers. The pressure pressure has been transmitted by the brake fluid. The pressure transmission is not operational as soon as the brake fluid contains too much water. To drive safely safety, we need to test the water in brake fluid ratio scale regularly. The brake fluid tester helps us in current maintenance and ensures that we drive safely . Features: Name: Brake Fluid Tester. Material: ABS. Dimensions: 6.14 x 2 .17 x 0.94 inches. Weight: approximately 150g. Use temperature: -10-50C. Power supply: 2 AA batteries (not included). Display: High resolution screen. Colour: gray and black. Scope of delivery: 1 f liquid tester kidney. 1 user manual.