[bushpilot]

the little dc volt meter is pretty basic but it'll give you some indication of where you are.
initially i was using a plug in meter (simple crap, but very effective)...and it can be removed if the display or LEDs are too bright at night. Amazon plugin DC Volt Meter LINK

A while ago i installed some AC (volt / amp) panel meters....one per 50a leg...works well and even my wife knows to watch them when she's gonna flat iron her hair and make coffee at the same time "don't exceed 30a combined (between both meters) honey"....or go for it you go 50a PER meter (leg)

simple stuff (AC meters were about 10 bucks each and use an inductive pickup).

as you can see in the picture below....top portion of the LCD (back lit in blue) is AC Volts & the BOTTOM portion of each meter is AC Amps.

left most meter (leg #1) is showing 118 volts ac / 10.3a
middle meter (leg #2) is showing 121vac and no amp load

the right most (plug-in) DC volt meter is showing 13.29 volts (converter charger is on, since i was on shore power).