Water and brake oil content display with automatic alarm when content is too ; supports detection across a variety of brake oils. Durable precision metal probe for accurate measurement; long service life and rust resistant construction. Three color backlit display automatically adjusts the backlight to suit the measured content for easy readability. Energy efficient design with automatic shutdown after about 5 minutes of inactivity to save power. Compatibility and use: suitable for monitoring water content in brake oil and other oils; supports detection across a variety of oil types. Practical applications: Automotive service centers performing brake system maintenance to ensure brake fluid quality and prevent corrosion or performance issues. Fleet maintenance facilities conducting routine checks of brake oil and water content during vehicle servicing. Quality control in shops or training labs where quick, reliable measurement of oil moisture is required. Key attributes: Function: automatic alarms for content, real time display of water and oil content. Material: rust resistant metal probe for durability. Display: three color backlit screen for clear reading in different environments. Performance: precise measurement with durable probe, energy saving auto shut off.