Multi Functional Switch Panel: Product integrated with USB port, digital voltmeter, 12V outlet, waterproof board and 5 on / off rocker switches, this 12V/24V electrical panel can meet your various needs. 12/24V Universal: USB.QC3.0 fast charging. Perfect for your machine. All in design, can be DIY used to control any vehicle electrical appliance, fits for all 12/24V Vehicles Boats Yacht Cruises Speedboat Cockpit Bus Rvs SUV Lorry Truck. Widely Uses: A variety of LED lights and accessories can be installed such as: LED light bars, LED rock lights, horn, fan, LED light , etc, can be powered all types of DC 12V 24V accessories. PROTECTION: provide over voltage protection, reverse polarity protection, over current protection, overheat protection, safe to use. Real time LED voltmeter shows the of the voltage. Dustproof & Waterproof: The waterproof marine switches perform well in a marine environment due to their splash proof panel, water caps. Color:Black Material:Metal Package Contents: 1 * Switch Panel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.