Digital voltmeter cigarette lighter

The digital display shows the voltage of the battery down to one decimal place, and the LEDs under the display light up depending on what voltage range the reading falls into. Red is ba Yellow is almost ok, . Free delivery and returns on all eligible orders. Dual USB 12V Car Boat Voltmeter Cigarette Lighter Socket Power Adapter Charger.

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Operating voltage: 12V Interface: 2. It shows you some stuff read by digital bus from the Engine Control Unit (ECU). ECU knows battery voltage with much better accuracy compared to what you measure on the cig. On some cars ECU has digital comunication with . This Voltmeter plugs into the cigarette lighter and checks the car battery voltage ( with engine off), and also the Alternator charging voltage when the engin.

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With high brightness of LED there is no difficulty in seeing the display. This digital gauge displays the voltage of batteries in the car. Powered by car cigarette lighter charger. Constantly monitor battery voltage, extend and protect the battery and engine life.

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