Test brake fluid for water content. These convenient pen style Brake fluid testers are designed without cable connector for easy, portable use.
Tester has auto-off function
Use 1 x AAA battery (included) (TE-7701)
a) Green LED = Moisture less than 1.5% - O.K.,
b) Yellow LED = Moisture between 1.5% and 3.0% - Consider flushing,
c) Red LED = Moisture greater than 3.0% - Fluid should be flushed immediately