How to Check Fluid Quality: 1. Press the button for 3 second ,the tester will turn on 2.Then enter the menuto choose the car module . 3. When using the tester in dark , please press "L" , it is for LED light . 4.Insert the tester into reservoir for a second 5 Read the result . Echnical parameters Type: 3451L Designation: Tester for brake fluid Net weight: 116g Power supply: 3v Range of testing fluid: DOT3 DOT4 DOT5 Lighting lamp: 5mm / 3mm Attractive force: 1000g / 500g Temperature: -30C+198C Probe: 17mm*26mm / 8mm*17mm Packing List: 1pc Brake Fluid Tester (not include the battery) Tips: After each finished the test, with a dry cloth or tissue to wipe clean the test points.
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