The Brake Fluid Tester Provides a Safety Escort for All Drivers and Passengers. Brake pressure was transmitted by brake fluid, the pressure transmission will be out of function once brake fluid including too much water. In order to safe-driving,we must test water ratio scale in brake fluid regularly. The brake fluid tester helps us do current maintenance, make sure we drive in safe condition. Features: Scope of Application --- Automotive Brake Fluid Detector is common fit for most vehicle. Check the health status of DOT-3, DOT-4, DOT-5.1 brake fluid and also most synthetic brake fluids. It's extremly convenient for personal use and broadly applied in individual workshops, repair factories and dealer workshops. Precision Testing & Universal Probe --- High sensitivity and precision probe, can be fast and accurate detect DOT-3, DOT-4, DOT-5.1 brake fluid and got result in seconds. The Goose Neck Probe provides flexibility on detection, which helps the detect process more elastic and efficiency. Easy Instant Reading & Alarm --- High Sensitivity Probe + High Resolution Screen + Sound Alarm, instand shows result, large display with backlight, easy and clear read under sun or night. Never limited by the enviroment. Once brake fluid including too much water alarm will be sound to remind you replace the brake fluid. Premium Quality & Ergonomic Design --- Fuselage with good texture, compact size, perfect hand-feeling. Goose neck surfaceoils and oxidation resistant, not easily corroded. Simple operation panel, easy to use. Probe top wiht flash light, you can observe the color of the brake fluid when necessary. Energy Saving and Environmental Protection --- This Automotive Brake Fluid Tester with automatic shutdown function, it will automatic shutdown after 5 minutes of standby. And only 2 AAA 1.5v batteries(not include) are needed when using. It's power saving and simple for using. Specification: Name: Brake Fluid Tester Material: ABS Size: 6.14 * 2.17 * 0.94 inch Weight: About 150g Using Temperature: -10-50 Battery: 2pcs AAAA Batteries (not include) Display: High Resolution Screen Color: Gray and Black Packing List: 1 * Brake Fluid Tester 1 * User Manual