Review on 🔌 Nilight 3 Cigarette Lighter Socket Panel 12V/24V with Dual USB Charger, LED Voltmeter, ON/Off Rocker Switch - Multi-Function Panel for Trucks, Cars, Marine Boats, RVs - 2 Years Warranty by Brent Walker

I bought this on behalf of the 24v compatibility to use with my 24v solar system to charge all my USB charge devices. However, when I connected it to my 24V solar system, the voltmeter box immediately flared up and released magical smoke. I tried catching the smoke and putting it back in but it didn't work. I took out the volt meter box and replaced it with another USB charging box I had and everything works great. I understand the voltmeter was 12v not 24v? I do not know. Otherwise everything works great, although it would be nice if voltage was displayed.