Features:
Input voltage: 12-24V, universal fits for all boats, cars.
Made of high and low temperature resistant flame retardant environmental material(ABS, PC, and PBT), you can even use it at -25 degree(Min) or 80 degree(max).
With a cigarette lighter socket, used with USB for charging mobile phones, tablet, navigation, GPS, car refrigerator, car vacuum cleaner, etc.
Compact design with panel, easy to install and looks beautiful.
Voltmeter to detect voltage in real time, convenient and safe. 
Fitment: for cars, boat, yachts, trailer, bus and other large transportation tools.

Specifications:
Material: ABS, nylon, aluminum sheet, and other metals
Color: black
Lighting color: Blue
USB socket output: DC 5V / 4.2A
Power outlet: DC 12V 15A  24V 10A
Operating temperature: -25℃-80℃
Input voltage: DC12V/24V
Output voltage: 12V/24V
Voltmeter range: 5V-30V
Protection grade: IP66
Hole size: 9.5x4cm (LxW)
Product weight: 140g / 4.93 oz
Product size: 12 * 6 * 10cm / 4.96 * 2.36 * 3.9 in
Package weight: 170g / 5.99 oz
Package size:14.2 * 10 * 5.5cm / 5.59 * 3.93 * 2.16 in

Package included:
1x Charging Power Socket
2x Switch
4 x Screw
2 x Blue terminal
4 x heat shrink tubing