Used to digitally test the brake fluid quality. Designed for professional use in the workshops. With 5 LEDs in total. A LED indicates the battery quality. LED 1 and 2 indicate less than 1-2% of water (acceptable) and LED 3 and 4 indicate 3% or 4% (unacceptable) of water in the brake fluid. Easy to use. -Suitable for brake fluids: Dot3, Dot4 -Operating temperature: -20 ~ 40 degrees d? - Power supply: 1x 1.5V AAA Battery - Includes battery - probe size: 13.2 x 3.5 mm - Dimensions: 150 x 23mm - Weight: 58 grams Note: Do not expose the dot 3/4 brake fluid to the atmosphere for a certain period of time and very hygroscopic (water absorption). It is designed to be hygroscopic, then when you change the brake fluid and guaranteed that all the water will also be removed from the braking system. NB.
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