YW-791L is a testing device that determines whether the brake fluid needs to be replaced by detecting the water content in the brake fluid. It can be used to detect the brake fluid DOT4.

 

YW-791L uses a high-sensitivity sensor with 4 test gears. During the test, the instrument will light up the LED indicator according to the water content in the brake fluid. The user only needs to observe the lighting condition of the LED light and at the same time check the brief gear description on the instrument to know whether the tested brake fluid needs to be replaced.

 

YW-791L has an automatic power off function. If the user does not perform any operation within a certain period of time, the instrument will automatically shut down. This function can, to a certain extent, avoid the power loss caused by forgetting to shut down. The self-checking function of the instrument can help users identify whether the instrument is abnormal. Under normal circumstances, press the power button, the instrument will light up the green LED light.

 

YW-791L humanized pen clip design, easy to carry.