1. Scope of Application Automotive Brake Fluid Detector is common fit for most vehicle. Check the status of DOT3, DOT4, DOT5.1 brake fluid and also most synthetic brake fluids. It's extremely convenient for personal use and broadly applied in individual workshops, repair factories and dealer workshops. 2. Precision test and universal probe Highly sensitive and precise probe, can quickly and accurately detect DOT3, DOT4, DOT5.1 brake fluid and has received the result in seconds. The gooseneck probe provides flexibility in detection, making the detection process more elastic and efficient. Probe top with flash light, you can observe the colour of the brake fluid if needed. 3. Easy Instant Read and Alarm High sensitive probe high resolution screen audible alarm, instant display result, large display with backlight, easy and clear reading in sun or night. NEVER LIMITED BY THE ENVIRONMENTS. As soon as brake fluid sounds too much water alarm, it will remind you that you need to change the brake fluid. 4. Premium quality and ergonomic design body with good texture, compact size, perfect hand feeling. Gooseneck surface oils and oxidation resistant, not easily corrosive. Simple control panel, easy to use. Probe top with flash light, you can observe the colour of the brake fluid if needed.