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4 In 1 USB, 12v Socket, Voltmeter and Switch (Surface Mount)
4 In 1 USB, 12v Socket, Voltmeter and Switch (Surface Mount)
SKU:pan-4in1-grn
In stock
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4 In 1 USB, 12v Socket, Voltmeter and Switch (Surface Mount)
📝 4-in-1 USB, 12V Socket, Voltmeter & Switch (Surface Mount)
The 4-in-1 USB, 12V Socket, Voltmeter & Switch Surface Mount Hub is a compact, fully pre-wired power station designed for caravans, campervans, RVs, boats, 4WDs, and off-grid systems. With dual USB charging, a 12V socket, a digital voltmeter, and an integrated ON/OFF switch, this all-in-one panel delivers convenient power access and system monitoring in a tidy, professional surface-mount assembly. Available in Red, Green or Blue backlit Led variants.
⭐ Essential Benefits
• Dual USB charging – fast 5V/4.2A output for phones and tablets.
• 12V accessory socket – ideal for GPS units, portable fridges, and 12v devices.
• Real-time voltage display – monitor system voltage (6V–30V).
• ON/OFF master switch – control power to the socket and USB ports easily.
• Pre-wired assembly – includes fuse and ring terminals for rapid installation.
⚙️ Functionality
This pre-wired panel connects directly to your 12v or 24v system using the supplied M6 ring terminals. The integrated inline fuse protects the circuit, while the toggle switch controls power to the USB ports and accessory socket. Mount the panel on any flat surface using the included hardware and enjoy immediate access to charging, voltage monitoring, and power control in one module.
🔌 Compatibility
• Works with 12v and 24v DC systems
• Suitable for caravans, campervans, boats, 4WDs, SUVs, and off-grid cabins
• Powers phones, tablets, cameras, GPS units, portable fridges, camp lights, and more
🧰 Installation Difficulty
🟢 2/5 (Easy)
Pre-wired panel with inline fuse and ring terminals for fast connection.
🔍 Features
• Dual USB QC3.0 charging ports
• 12V socket output
• Digital voltmeter (6–30V range)
• Integrated ON/OFF toggle switch
• Pre-wired with M6 ring terminals
• Inline glass fuse
• ABS body with aluminium mounting plate
• Surface-mount installation
📊 Specifications
| Specification | Value |
|---|---|
| Power Input | DC 12–24V |
| USB Output | 5V / 4.2A total |
| Power Outlet | DC 12V |
| Voltmeter Range | 6–30V DC |
| Operating Temperature | –40°C to +85°C |
| Material | ABS + Aluminium Plate |
| Weight | Approx. 130g |
| Fuse Type | Inline Glass Fuse |
| Terminal Type | M6 Ring Terminals |
📦 What’s Included
• 1 × Dual USB Charger
• 1 × 12V Socket
• 1 × LED Voltmeter Display
• 1 × ON/OFF Toggle Switch
• 1 × 4-Hole Surface Mount Panel
• 4 × Mounting Screws
🙌 Why Choose This Product?
The 4-in-1 Surface Mount Power Hub gives you a clean, organized solution for charging, voltage monitoring, and system control. With its pre-wired configuration and built-in protection, installation is fast and simple, making it ideal for both DIY builds and professional fit-outs.
🚀 Our Promise
Order today for same-day dispatch and enjoy organised, reliable power management across any 12v–24v setup.

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Tested for Reliability
All products are tested in real Aussie off-grid conditions before we stock them.
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Fast Dispatch
Order before 3 PM AEST for same-day shipping from Geelong, VIC.
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Quality Over Price
We only stock products we’d use ourselves—even if they cost a bit more.
Our Commitment
At Campervan Builders, our commitment is simple: we only supply quality campervan, caravan, motorhome, and RV parts that we’ve personally tested in real off-grid conditions. From interior LED lighting to Starlink 12V conversion kits, every product is chosen for reliability, durability, and ease of installation. We back this with fast shipping Australia-wide, friendly support, and honest advice to help DIY builders and professionals alike. When you shop with us, you’re choosing proven gear that keeps you connected and comfortable on every adventure.


















