| Model | YW-791L |
| Detection oil type | DOT4 |
| LED indicator meaning | Green: Battery ok, no water is detected; |
| Green/Yellow: The water content of the brake fluid is less than 1%, please rest assured to use; | |
| Green/Yellow/Yellow: The water content of the brake fluid is close to 2%, and it can be used continuously; | |
| Green/Yellow/Yellow/Red: The water content of the brake fluid is close to 3%, it is recommended to replace it; | |
| Green/Yellow/Yellow/Red/Red: The water content of brake fluid is greater than 4%. It must be replaced Immediately. | |
| Auto power off time | 15 seconds |
| Operating environment | Temperature: 0~50ºC; Relative humidity: ≤85% |
| Altitude | 2000m |
| Protection level | IP40 |
| Power supply | 1 AAA 1.5V alkaline battery |
| Dimensions | 152*25*21mm |
| Shell material | ABS |
| Weight | About 35g(Without batteries) |
YW-791L is a testing equipment that judges whether the brake oil needs to be replaced by detecting the water content in the brake oil. It can be used to detect the brake oil DOT4.
YW-791L adopts high sensitivity sensor and has 4 test gears. During the test, the instrument will light up the LED indicator according to the water content in the brake fluid. Users only need to observe the lighting of the LED lights and compare the brief gear description on the instrument to know whether the tested brake fluid needs to be replaced.
YW-791 Universal Tool Vehicle Brake Fluid Liquid Tester>>
YOWEXA, established in 2010, is a high-tech enterprise with 3 holding subsidiaries and a production area of 1,500 square meters, focusing on the R&D, manufacturing, sales, and solutions of precision measuring instruments and sensors. There are more than 30 R&D personnel and dozens of independent intellectual property rights. 
Q. Do you make custom products?
A. Yes, we offer OEM/ODM solutions for our clients.
Q. How long is your lead time for samples?
A. 5-7 days. For bulk orders, 10-30 days depending on the quantity.
Q. What is your terms of payment?
A. 100% for small orders. 30% in advance as deposit and 70% balance before the delivery.
Q. How can we pay?
A. You can pay via T/T, PayPal and Western Union.
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