HUGHES AUTOFORMER DUAL COLOR LED DIGITAL VOLTMTR HUG DVMDUAL

See if you are getting proper voltage with just a glance! The dual color digital voltmeter is highly accurate. If the LED light is green, this means your voltage is in an acceptable range. If the LED light is red, the voltage may be damaging to your RV! Simply plug in to any outlet in your RV to measure AC voltage. Also suitable for boat/marine, household or office usage! Measuring range: AC current from 90 - 132 Volts.