MASO Auto Motorfiets DC 12-24V Dual LED Digitale Ronde Panel Voltmeter Ampèremeter Amp Volt Meter Guage (Blauw)

Makes cool fireworks when 120v is ran through it.. but only good for a single show. Worked well for a boat voltmeter also,until i plugged it into the wall.. dont do that.. or do. And enjoy the short show..

The light is quite bright. Good thing I don't have it in my line of sight on the dash where it's mounted. I keep track of my truck's main battery and the aux battery. It's nifty to monitor the changes. I have a gut feeling this could run the battery down if left on, despite what packaging says. There is no off switch so it just stays on at full brightness setting. I don't see a viable alternative on the market, so this appears to be one of the better fits available.

This does not give amperage only voltage waste of money