Thank you very much for choosing the brake fluid and tire pressure tester. It is a highly accurate, easy to use, very beautiful product.
The tester is a new high-tech product that combines automotive brake fluid testing and tire pressure testing. Users can regularly check the water content of the brake fluid of the car, making driving safer and more worry-free using the right tire pressure can give You greater safery, longer tire life and better fuel consumption, and hope it will protect your safe driving.
Green light: battery is OK, the water content in the brake fluid is 0%
Yellow light: The water content in the brake fluid is 3%, indicating that the brake fluid cannot be used any more and needs to be replaced immediately.
1* brake oil test pen