Review on 4-in-1 Marine Switch Panel with 12V Dual USB Charger Socket, LED Voltmeter, Cigarette Lighter Socket, and LED Lighted ON/Off Rocker Toggle Switch for Truck Car Marine Boat RV by Jesus Olsen

A selling feature of this item is customization. I didn't need a cigarette lighter and needed a second switch so I bought two of these items to get an extra switch. A pretty cool option for a Switch, but when the price of the base unit is that cheap, it's fine. Overall, this product appears to be a marketing baby, relying on the buyer to put the pieces together into something usable. As a work tool, it leaves a lot to be desired. Several fuses were defective upon receipt, but these fuses and holders were discarded in favor of the main circuit fuse. It is doubtful that the wiring and connections match the proposed schematic. And the switch doesn't snap tightly into the case, but is held in place by friction. Charger and voltmeter work as expected. Finally, with a lot of DIY and a box of extra connectors and wires, this supplies the parts for the voltage monitoring panel.