Automobile Brake Oil Detection Pen Brake Fluid Moisture Tester 1. Material: PP 2. Power supply method: AAA x 1 (excluding) 3. Working current: 4~30mA 4. Range: 0~50 degrees Celsius. Applicable to all models of oil performance tests 5. Sleep current: 22uA 6. Working voltage: 1~1.5V 7. Small and convenient, carry around 8. Enter sleep after 10 seconds, low power consumption is more durable 9. Brake oil safety inspection, supports DOT 345.1, and can be used by all brands without oil limits. 10. Accurate measurement of five gears, different colors of indicator lights, easier to identify 11. Weight: 36.5g Preparation before testing: Unscrew the lid of the brake fluid reservoir and remove the probe protective cover of the test pen. Tap the power button to light up the green light at the lowest of the 5 display lights on the pen Detection of moisture content: 1. Immerse the front metal probe of the detection pen with green light into parallel to the brake fluid in the liquid reservoir to ensure that both probes are in contact with the oil surface. 2. Judging the status of the brake oil based on the color of the indicator lighted above the detection pen 3. After completing the inspection, all indicator lights will turn off after 10 seconds. The detection pen enters power-saving mode. A battery can last for a long time and consumes almost no power. It is recommended to keep this device in the vehicle to keep abreast of the quality of the brake oil, which is easy and quick to operate. Notes: 1. The metal probe cannot touch any object when installing the battery 2. If the power button is pressed, the green LED light still does not light up, the battery needs to be replaced. 3. After each test, please wipe the liquid on the metal probe with a dry cloth or paper towel. 4. If the skin is exposed to brake fluid, immediately clean the skin thoroughly with water. 5. Please do not expose the brake fluid to the air for a long time, because the brake fluid has st