The Hangar 9 DVT Digital Voltmeter & Tachometer is a handy little gadget that will make your life a lot easier when it comes to keeping track of your vehicle's battery voltage and engine RPM. This digital voltmeter and tachometer combo unit is designed to be used with virtually any 12-volt automotive battery, and it features large, easy-to-read digital displays for both the voltage and RPM readings. The unit also features a built-in LED light for nighttime use, and it comes with an adjustable mounting bracket that allows you to mount it just about anywhere in your vehicle.
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