Amarine-made Digital Voltmeter Cigarette Socket Double USB Power Charger Adapter Flush Mount Waterproof 6 Gang Rocker Switch Panel Black for RV Car Boat/Marine-PN-R6S3 Blue LED light indicator and with a 2 USB charge slot can satisfy you all king of charging needs. Switch are marine-grade; waterproof and approve Rhos and CE, Totally friendly-environment. Easy to install: only put this in to the switch hole, fix it with screws and then you can begin to use it. Panel comes with pre-wired, mounting screws and a set of 100 piece labels;wiring instructions Number of Switches: 6 Stainless Steel Screw: 6 pieces