Feature 1Mini portable, no need to take external oil, accurate measurement, can prolong the service life of the car. 2Onekey boot detection, higher accuracy. The LED display can accurately display the results, and the readings are clearer. 3Use the optical principle to check the oil condition of the engine and get the latest status of the oil anytime and anywhere. 4With optical probe, no need to take oil outside, just put the probe into the oil dipstick to get the test result. 5Install the battery, put the probe into the engine tank, turn on the power and start the test.Item Type: BrakeFluidTesterMaterial: ABSTest Range: DOT3, DOT4, DOT5Color: PurpleBattery: 2 x AAA battery (included)Probe Diameter: Approx. 5.3mm/0.21inOil Hole Requirement: Diameter > approx. 6mm/0.24in, curvature < 30Hose Length: Approx. 800mm/31.5inDetection Type: Turbine oilTemperature: -30 - +198Suction: 1000g .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x BrakeFluidTester2 x AAA Batteries1 x Cleaning Cloth1 x Chinese ManualNote1. Please do not test whether the engine temperature is higher than 60. Please check the thermometer on the instrument panel. The test temperature must be below 60.2. Before testing, check that the probe is clean and that the probe is fully oiled during the test.3. The new oil display is 100.0%, the normal range is 30% 100%. If the oil test results are below 30.0%, the detector will sound an alarm indicating that you should change the oil.