Timely replacement of brake fluid is one of the elements of safe driving. Brake fluid autotester allows you to quickly assess its condition and indicate the need for replacement. The miniature device has the shape of a pen, is powered by 3A batteries, has five LED indicators, the glow of which indicates the content of moisture in the brake fluid. Green LED - water content 0 - 1.5% (normal), yellow - water content from 1.5 - 3% (change soon), red - water content more than 3-4% (urgent change). The clear color indication of the brake fluid status allows you to determine the presence of moisture relatively accurately.