allsun Portable Brake Fluid Tester Auto Tools Diagnostic Testing Tool Automotive Brakes Calibrated For DOT 3 DOT4 and DOT 5 with 1 LED Indicator

Staying safe and knowing that your car is in top condition is most important. Ideally, brake fluid should be checked regularly and changed every one to two years. As moisture seeps into the brake system through the brake hoses and seals the brake fluid will become contaminated and the danger of brake failure will increase. This pen-shaped brake fluid tester can easily help determine whether it's time for you to change your brake fluid. OPERATING INSTRUCTION 1. Clean the test head ( including two metal probes ) and wipe it dry with cloth. 2. Press the button on the top of the tester to turn on the tester. EM2272A has three test modes - DOT 3, DOT 4, and DOT 5.1 brake fluid test modes; you must select a proper test mode to match the brake fluid to be tested. Use the following procedure to select a desired test mode: (1) With the tester in off state or in test state, press and hold down the button for about 5 secs; the green, yellow and red test indicator LEDs will light in turn. (2) Release the button, the mode indicator will indicate which mode is the tester is in, as indicated as follows: If the mode indicator flashes red, the tester is in DOT 3 brake fluid test mode. If the mode indicator flashes green, the tester is in DOT 4 brake fluid test mode. If the mode indicator flashes orange, the tester is in DOT 5.1 brake fluid test mode. (3) When the mode indicator flashes, press the button until the tester is in desired test mode. (The mode indicator indicates the present test mode.) Wait about 5 secs. The tester saves this mode and the mode indicator stops flashing.