Zeltauto LED Digital Car Voltmeter 12V/24V Vehicle Voltage Gauge Monitor for Auto Car Truck
- With red screen digital color, there is no difficulty in seeing the display.
- Measuring range: DC 8V-30V+/-1.2% (The....
- This digital gauge displays the voltage of batteries in the car.
- Powered by car cigarette lighter charger.
- Simple enough to use, just plug it into cigar lighter socket, watch alternator's output from idle to accelerated speed.
- When engine running (do not drive), the LED display: between 13.5 to 14.5 (12V car), between 26.0 to 28.0 (24V car).
- When engine off, and nothing turned on, LED display: Greater than 12.0 (12V car) or 24.0 (24V car).