Product: Linkstyle 4 in 1 Marine Switch Panel, 12V 4.2A Dual USB Charger Socket Power Outlet & LED Voltmeter & Cigarette Lighter Socket & LED Lighted ON Off Rocker Toggle Switch for Truck Car Marine Boat RV
Brand: Linkstyle
Color: Blue
Linkstyle 4 in 1 Marine Switch Panel, 12V 4.2A Dual USB Charger Socket Power Outlet & LED Voltmeter & Cigarette Lighter Socket & LED Lighted ON Off Rocker Toggle Switch for Truck Car Marine Boat RV
Specification:Material: ABSColor: Black Shell & Blue LED LightUSB Socket Output: DC 5V/2.1A & 2.1A (total 4.2A)Power Outlet: DC 12VVoltmeter Display Range: 0-24VToggle Switch: 20A 12V DC
All Components Dimension:Cigarette Socket Dimension: Approx. 1.18" *2.13"(30mm * 54mm)USB Car Socket Dimension: Approx. 1.18" *2.05"(30mm * 52mm)Rocker Toggle Switch Dimension: Approx. 1.18" *1.57"(30mm * 40mm)LED Voltmeter Dimension: Approx. 1.18" *1.02"(30mm * 26mm)Four Holes Panel Dimension: Approx. 7.67" * 1.69"(L * W)
Noted: 
1. Blue led light goes off when the switch is off.2. Wire length: 23.62in. Wire size: 18AWG.3. The 12v USB car socket is built-in dual USB charging ports, two ports output: 5V/2.1A&2.1A (total 4.2A). Do not support the rapid charge.4. Total power can not over 100W.Package Included:1 x 12V Cigarette Socket1 x Light Digital Voltmeter1 x Dual USB Power Outlet Socket1 x ON-OFF Rocker Toggle Switch1 x Four Holes Panel4 x Stainless Steel Screws9 x Blue Terminals
4 in 1 Charger Socket Panel - This 12v socket panel designed with 12v rv usb outlet + LED digital display voltmeter+ 12v cigarette lighter outlet + LED rocker toggle switch. Convenient for install and operate. Also detachable to replace other charger sockets or anything else that fits.
Waterproof Dual USB Charger Socket - This 12v USB car socket is built-in dual USB charging ports, two ports output: 5V/2.1A&2.1A (total 4.2A), will auto detect your devices and simultaneously charging 2 devices at optimal speed!
Real Time LED Voltmeter - With large digital voltmeter display that shows 0-30V voltage, you can monitor the condition of the battery on your car or boat that if the voltage is under normal status.
LED On Off Rocker Switch - Designed with rocker style, easy to use. Long lifespan up to 10000 cycles. Additional cigarette lighter socket is portable for other appliances in your vehicle.
Overcharge Protection - Over-heated, over-current, over-charging protection; This dual usb charger power socket also smart to identify the most appropriate current for your device.

Search query: add 12v power truck bed
Relevance: Complement