ITEM NAME:12V 24V Dual Usb Socket Dual Charger Car Charging Port B4V5 12V 24V Dual Usb Socket Dual Charger Car Charging Port B4V5 4 USB socket supports a variety of electronic product charging With waterproof cover, good dustproof and waterproof effect High current resistance, high temperature and wear resistance USB with LED blue indicator Colour: Black Product material: ABS Product size: 105*45*5mm Accessories: 4 screws, 4 cold pressed tablets USB socket input voltage: 12-24V USB socket output voltage: 5V 1A, 5V 2.1A Number of USB output holes: 4 USB Wiring instructions: The back of the charging stand is marked with "+" and "-", which can be connected to the positive and negative power supply. Of course, you can also lead out at the power supply and get an independent switch! Installation method: first use the hole opener, open two holes of about 3cm diameter, put the product into it, and then tighten with the screw ring Package Contents: 1* dual USB dual socket charger 4* screws 4* cold pressed tablets