- Highly prepared metal probe with a high sensitivity sensor for fast, precise measurements. The probe is oil-proof and resistant to oxidation to ensure good conductivity and long-term stability. - Flexible tubes with metal snakes allow easy adjustment of the probe direction during testing, enabling convenient detection in tight spaces and across different test scenarios. - LED 3 color backlight display provides clear, easy to read results. The backlight colors indicate the test outcome to help you quickly understand brake fluid condition. - Alarm system with visual and auditory alerts. Beeps and color changes indicate when brake fluid moisture is within safe limits or has exceeded acceptable limits. 2-3 practical use scenarios - Routine brake fluid moisture checks during maintenance on passenger cars, light trucks, and other vehicles to confirm fluid quality before brake service. - Brake system inspections in auto repair shops where accessible probe positioning is needed to reach reservoirs or hard-to-access areas. - Field service or fleet maintenance where flexible probe direction supports testing in parked or mobile environments with limited space.