For readouts of voltage, I have one of those Harbor Freight lighter
socket devices...plug it into the socket and there are three readout LEDs
that light according to the voltage....Very inexpensive, works just fine,
has been in service now for over a year, so it's Eastern Origin is not
proving 'you get only what you pay for" in this case.

   The 'stand by' feature on my in car stereo (Sony head) causes my battery
to drain in just a few days...it is not inconsequential, that voltage
draw.  I've installed a switch to shut that current drain off.

On Mon, Oct 20, 2014 at 8:52 AM, Richard Smith <richard_smith@gnwc.ca>
wrote:

> Looks like a good option. I ordered the smaller, two-part one:
>
>
> http://www.banggood.com/Motorcycle-Dual-USB-Charger-Adapter-With-Voltmeter-Socket-p-940589.html
>
> I like the idea of placing it on that grill area. Both the USB and the
> voltmeter seem to generate a lot of light, so perhaps a common switch to
> get rid of both lights…
>
> …r
> --
> Richard Smith
> Professor and Director, Master of Digital Media Program at the Centre for
> Digital Media
> 685 Great Northern Way, Vancouver, CANADA V5T 0C6
> Ph: +1 778 370 1012 t: @smith  e: smith@thecdm.ca w: http://thecdm.ca
>
>
> On October 20, 2014 at 6:59:30 AM, Edward Maglott (emaglott3@gmail.com
> <mailto:emaglott3@gmail.com>) wrote:
>
> This thing could be useful in our vans. Can be mounted vertically
> too. I put a cigar lighter outlet on the cabinet wall at the rear of
> the fridge cabinet. Near the little square grille for fridge heat
> release. Something like this would have been another option for
> there. I would want a switch to turn off the voltmeter though.
>
>
> http://www.banggood.com/Dual-USB-Adapter-Charger-Cigarette-Lighter-Sockets-Digital-Voltmeter-p-949446.html
>
>
> Edward
>