Features: 6-in-1 marine switch panelThis 12V socket panel is designed with 3 12V cigarette-lighter sockets+12V rv USB sockets+LED digital display voltmeter+LED rocker switch. Easy to install and operate. It can also be disassembled to replace other charger sockets or any other accessories. 3-socket cigarette-lighter adapter distributor-three cigarette-lighter sockets have been expanded, which is enough to use various portable devices in the vehicle at the same-time. Waterproof dual USB charger socket-This 12V USB charger socket is built with dual USB charging ports, and the two ports output: 5V/2.1A&2.1A (4.2A in total), which will automatically detect your equipment and charge two devices at the best speed! Real-time LED voltmeter-With a large digital voltmeter to display the voltage of 5-48V, you can monitor the battery-condition of a car or ship if your voltage is in a normal state. Long service life and overcharge protection-rocker switch design, easy to use. Life is as long as 10000 cycles. Overheating, overcurrent and overcharge protection to ensure the safety of charging. Specifications: Material:ABS Size:Approx.15x10.5x6cm/5.9x4.13x2.36inch Color: Black Product weight: 246g Accessories: 4 screws and 13 blue terminals. Input voltage: 12-24V Output voltage: 5V4.2A. Measuring range of voltmeter >: 6-33V Product material: ABS, aluminum plate Input voltage of cigarette-lighter: 12V 20A,24V 10A. Wiring method: The back of the charging stand is marked with "+"and "-",which can be connected to the positive and negative poles of the power supply. Scope of installation: the product is suitable for all car, caravans, yachts, ships with 12-24v voltage. Engineering vehicles can be installed and used. Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Sockets Toggle Switch