Feature: 1. 100% Waterproof 2. Measuring CD voltage with anit-reverse & short circuit protection 3. Real -time monitor the battery voltage, make the battery used in the normal operating voltage, and protect the battery and engine. 4. Under the normal circumstance that the motorcycle did not launch, the voltage 12.5V above is normal. After motorcycle launch, the voltage normal value of the generator is 13.5V-14.5V, the voltage which is too high or too low is faulty, it is recommended to repair shop for inspection. 5. Fixation methods: first open a hole about 3cm in diameter, then put the plug into the hole, and then tighten the screw ring! 6. Wiring guidelines: there are marks " +" and " - " at the back of voltmeter, connected the wires to the corresponding original car ACC wires.
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