Digital AC dual readout amps and volts panel meter.

The specifications imply that it might work, but accuracy from 0.1V all the way up to 500V is a big working range.  It certainly looks good.

However I'm concerned about the threatening language contained in the instructions - specifically the last sentence of point 1.  It seems if the wrong working power is provided, the meter will start to destroy!  But destroy what?  The user?  Friends and family?

"Working power" is 220V?  I wonder if it needs to be isolated like most of the other meters?

Ambiguous listing: Working voltage 110 vac

Found an Alibaba listing which seems to be the same model number with a tad more insight into the power supply issue.  Seems inconvenient to run 110V AC to the control panel for the sole-purpose of powering the meter...

I suspect it won't be any more accurate than the other models that have been talked about here either.

Seems to meet specs if the working voltage is 110vac...stans is the same as my link. What would be a good low powered 110vac power source?

Well, the wall outlet is where I get 110VAC!

haha..talking ma not amps just enough to power the gauge.

I'll bet you can find a cheap 12V or 14V AC transformer and run it "backwards" to step up AC Accessory voltage to line voltage.  I'm not happy with running AC wall voltage around but I'd think this would be one way of minimizing the amount of 120V AC wiring.  I'd be curious about GRJ's point of isolation.  If you want to instrument multiple blocks that have a common outer-rails, do you need independent AC sources for each meter combo?

If I were doing it, I'd look into how to by pass the 120V AC "working power" input and supply 12V DC, 5V DC or whatever.  Surely the meter is using the AC-dropping capacitor method as discovered in your other long-thread to reduce 120V AC to the low DC voltage to run the meter electronics and digital display.