HHTEC Brake fluid tester Auto Diagnostic Brakes Testing Tool Calibrated for DOT 3/4/5 with 5 LED Indicator

Quick check of brake fluid condition: Designed to test the water content in brake fluid, helping you quickly determine whether the fluid needs to be replaced for safe driving. 5 LED indicators for clear water content levels: The 5 LEDs display water content from 0% to over 3% in 5 steps, giving you a quick visual indication of brake fluid condition. Compatible with common brake fluids: Suitable for DOT3, DOT4 and DOT5 brake fluids. Most modern vehicles use DOT4 brake fluid, making this tester widely applicable. Simple operation with auto power-off: Insert the probe into the brake fluid and press the button. The tester automatically switches off after 12 seconds to save battery life. Indicator tool, not a precision instrument: This tester provides a quick indication only and does not show exact numerical values. Designed for routine maintenance checks, not laboratory measurement.