SAFE & USEFUL: The unit is Mini Pen Liquid Moisture Water Tester Tool. Check the health status of DOT3, DOT4, DOT5 car brake fluid, it will be safer for your driving.
5 LED INDICATORS: 5 LED to indicate percentage of water in the brake fluid with three colors green yellow and red. Even in the dark does not affect reading, make reading data easier.
EASY TO USE: The brake fluid tester is easy to use. Check the quality of brake fluid in car only takes seconds. Make it easier to operate for beginner. It's a must-have car tool for your car owners.
PORTABLE & DURABLE: Brake fluid tester pen is small compact size, easy to carry. Super strong ABS shell, has long service life.
AUTO TURN OFF: In order to save power, this test pen has the automatic shutdown function, it will automatically turn off the power 15 seconds after starting every time.
Brake fluid detection pen is based on the change in conductivity to determine the moisture change brake fluid. It shows clearly the extent of moisture contained by the light-emitting diode, high moisture content will lead to lower boiling point, affect braking performance. Red indicates the brake fluid needs immediate replacement, green represents good condition, yellow indicates the state is acceptable but soon replaced.
1, The green LED lights = water content in the brake fluid H2O <1.5%, brake fluid qualified. 2, The yellow LED lights = brake fluid water content H2O = 1.5% to 3%, can continue to use, test again six months later. 3, The red LED lights = water content in the brake fluid H2O> 3%, can not continue to use the brake fluid, needs to be replaced. 4, LED red flashing: battery replacement. 5, LED yellow: low moisture content, check again in six months. 6, LED green: brake fluid lines / cell row. 7, Green / yellow / yellow / red / red: brake oil in water content of at least 4%, the brake fluid must be replaced immediately responsible for very dangerous.
Material: High quality environment-friendly ABS
Power Supply: 1*LR03 AAA 1.5V battery (not included)