Specifications:<br> USB Pocket: 2 USB (5V 2.1A / 5V 2.1A)<br> Operating Temperature:-25℃-80℃<br> Protection class: IP65<br> Related Certificates: CE / RoHS / UL <br><br> Description<br> Multifunction Switch Panel Kit:included 2.1A/5V & 2.1A/5V dual usb charger,digital voltmeter, cigarette lighter socket and ON-OFF Button Switch<br> Material: Made of engineering ABS plastic and the entire plate is nylon built<br> Output circuit protection, overload protection & reverse polarity protection<br> Submerged in water operation is not recommended<br> Usage: forCar, Truck,Boat, Marine, ATV, RV,Trailer Vehicles Yacht SUV, etc. <br> 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.<br><br> Description on Dual USB Power Charger:<br> Working voltage:12-24V<br> Output current:4.2A<br> Output voltage:5V<br> LED Light:Blue,Green,Red.<br> Rubber cover should be on to protect the device from moisture<br> Waterproof casing will protect the charger from rain or coffee spill<br> Dual USB port can satisfy you all kinds of charging needs. Charge for iOS Android mobile phone, GPS Navigator, camera, MP3 Player, etc.<br><br> Description on Voltmeter:<br> Voltage indicator real-time monitor your vehicle's voltage from 6V to 28V<br> The led digital voltmeter clearly shows your car volts and helps you to better understand battery condition.<br><br> Description on Cigarette Lighter Socket:<br> Working voltage:12-24V<br> Output voltage:12-24V<br> 12V / 24V cigarette lighter socket with dustproof rubber seal cover.<br> Rubber cover should be on to protect the device from moisture<br><br> Description on ON-OFF Button Switch:<br> Working voltage:12-24V<br> LED Light:Blue,Green,Red.<br>