Description: Multifunction Switch Panel Kit: included 2.1A/5V & 2.1A/5V dual usb charger,digital voltmeter, cigarette lighter socket and ON-OFF Button Switch Material: Made of engineering ABS plastic and the entire plate is nylon built Output circuit protection, overload protection & reverse polarity protection Submerged in water operation is not recommended Usage: for Car, Truck,Boat, Marine, ATV, RV,Trailer Vehicles Yacht SUV, etc. Suitable for both 12V and 24V systems Panel is pre-wired Easy to install: only put this in to the switch hole, fix it with screws and then you can begin to use it. Description Dual USB Power Charger: Working voltage:12-24V Output current:4.2A Output voltage:5V LED Light:Blue,Green,Red. Rubber cover should be on to protect the device from moisture Waterproof casing will protect the charger from rain or coffee spill Dual USB port can satisfy you all kinds of charging needs. Charge for iOS Android mobile phone, GPS Navigator, camera, MP3 Player, etc.   Description Voltmeter: Voltage indicator real-time monitor your vehicle's voltage from 6V to 28V The led digital voltmeter clearly shows your car volts and helps you to better understand battery condition. Description on Cigarette Lighter Socket: Working voltage:12-24V Output voltage:12-24V 12V / 24V cigarette lighter socket with dustproof rubber seal cover. Rubber cover should be on to protect the device from moisture Description on ON-OFF Button Switch: Working voltage:12-24V LED Light:Blue,Green,Red. Package Including: 1 x Cigarette Lighter Socket  1 x LED Voltmeter  1 x Dual USB Charger  1 x Toggle Switch  3 x 60cm Red/Black Cable with 10A Fuse 8 x Insulated Terminals  4 x Screws.