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After Extensive testing in my own vehicles for a while I am now proud to offer Down4sound digital volt meters!
I have tried several others with poor results....and sadly a couple of them are very popular. That is the main
reason why I wanted to test mine for a while before offering them for sale!
Capable of working with all of your Car audio systems! 12v,14v,16v and 18v are no problem at all!


  • Dimensions: 1.89" x 1.14" x .84" (L*W* H)
  • Cutting size: 1.79" x 1.02" mm (L*W)
  • Minimum input: 3.50V DC
  • Maximum input: 30.0V DC
  • Measurement range: DC 3.50 - 30.0V
  • Measurement accuracy: +/- (0.5% + 2 Digit)
  • Display mode: Three 0.56 LED digital tube

40 Reviews Hide Reviews Show Reviews

  • 5
    Volt meter

    Posted by Gerardo Leyva on Nov 2nd 2021

    Absolutely impressed with my purchase! Illumination is perfect at night and during the day. It's readings are on point. Great product! Definitely recommend !!

  • 5
    Volt reader

    Posted by Robert Edwards on Oct 17th 2021

    I installed the green one and it works great. Always know my voltage.

  • 5
    Volt reader

    Posted by Robert Edwards on Oct 2nd 2021

    Haven't got it hooked up just yet but I plan on having it done in the next day or two. I actually have two of the voltmeters because I am adding a second battery to my system but I just tore everything out and I'm starting totally fresh so each battery will have a volt reading.

  • 5
    Digital Volt Meter

    Posted by JEFF MANLEY on Aug 30th 2021

    only thing to make it better would be a remote turn on so you don't have to put it on a switch

  • 5
    Highly recommended

    Posted by Jeffrey Rodriguez on May 1st 2021

    Installed 2 of these for both of my batteries and they work flawlessly. For the price point they just can’t be beat. 5 stars

  • 5
    Digital Volt meter

    Posted by Nate Hutter on Feb 10th 2021

    This is a great tool and it was easy to connect to my amp. I am happy with the performance and readings are accurate.

  • 5
    D4s volt meter

    Posted by Nikolas Barbachano on Feb 9th 2021

    It is a very great product it shows the actual right voltage and it is bright for the day to see it but also not as bright at night to blind you while driving. Very easy to install and is easy to install anywhere you would like it to.

  • 5
    Very simple and very nice

    Posted by Phillip Hunt on Oct 14th 2020

    Straight forward very clean and does the job.. no con does it its made for!

  • 5
    Honestly i’ve done extensive research before purchasing a volt meter and after buying this one i think its the best one very very accurate, no dial screw very bright light simple sleek deisgn no name or logo just a very nice simple design that does i

    Posted by Christopher on Jun 2nd 2020

    Only thing i will comment on the lead wires should have been way longer and maybe a little thicker other than that perfect