Car Brake Liquid Digital Tester Pen Accurate Auto Automotive Testing Tool Oil Quality Check Brake Fluid Tester Vehicle

Features: Powerful and easy to operate; Accurate measurement and safe use; Check all brake fluids; Equipped with automatic shutdown function; Can test DOT3/4/5 brake fluid. Preparation before testing:Loosen the cover of the brake fluid reservoir and remove the cap of the test pen. Immerse the test probe into the brake fluid in the reservoir. Moisture content test:Press the power button and the green LED will light up. Keep it for 1 second, and the test result will be displayed by the LED light. After the test is completed, the test pen will automatically turn off after 12 seconds. Specification: Material:Steel，Nylon Color:Black Size:15.5cm/6.10inch x 2.5cm/0.98inch Product instructions: Green: Electricity OK/No water content; Green/Yellow: Water content less than 1%; Green/Yellow/Yellow: moisture content close to 2%; Green/Yellow/Yellow/Red: With a moisture content close to 3%, it is recommended to replace the brake fluid; Green/Yellow/Yellow/Red/Red: If the water content is higher than 4%, it is dangerous and the brake fluid must be replaced immediately. Package Included: 1 x Brake Gauge Pen NO Retail Box. Packed Safely in Bubble Bag.