This is a fully-terminated DC extension cord with a 5.5 x 2.1 mm male barrel plug at one end and a matching female barrel jack at the other — a passthrough extension for CCTV cameras, LED strip controllers, routers, and any 5 V or 12 V device that needs more cable than the included adapter provides. 22 AWG copper conductor, 3 A continuous, lengths from 0.5 m to 10 m, in black or white.
Product Description
This is a male-to-female DC barrel-jack extension cord, sized to the standard 5.5 mm outer diameter / 2.1 mm inner diameter connector found on the largest installed base of consumer 12 V devices. Unlike the bare-leaded "pigtail" cables in the same category, this extension is fully terminated on both ends — you plug your existing power adapter into the female end of the extension and the extension's male end into your device. No wire stripping, no soldering, no crimping.
The intended use is solving the very common problem of an undersized factory cable: your CCTV camera is mounted 5 m from the nearest outlet, but the camera came with a 1.5 m adapter cable. Buy a 5 m extension and plug it inline. Same logic applies to LED strip controllers, mesh wifi access points, fiber ONT routers, hard drive enclosures, and anything else with a 5.5 x 2.1 mm input.
The cable is a true passthrough — it does not convert voltage, regulate current, or filter noise. Whatever your adapter outputs at the wall end is what reaches your device. 22 AWG copper conductor is appropriate for 3 A continuous current, which covers virtually any single CCTV camera, single LED strip, or single small router.
Key Benefits
- Fully terminated male-to-female barrel jack — no wire stripping or soldering required
- Seven length options (0.5 m to 10 m) cover desktop, ceiling-mount, and long-run installs
- 22 AWG copper handles 3 A continuous — enough for any single 12 V CCTV camera or LED strip
- 5.5 x 2.1 mm size matches the most common 12 V consumer device input
- Passthrough design — does not convert voltage or alter the adapter's output
Key Features
The defining feature is the male-to-female terminated form factor. "Pigtail" cables in the same gauge and connector size leave one end as bare wire — those are intended for installers who will solder or crimp the bare end into a custom assembly. This extension is the right product when you do not want to do any electrical work — you bought the device, you bought the adapter, you just need 2 more meters of cable between them. Both ends snap together with the existing connectors and the device works.
Technical Specifications
The defining parameters are the 5.5 x 2.1 mm barrel-jack form factor, the 22 AWG copper conductor, the 3 A continuous current rating, and the male-to-female terminated configuration. Full specs below.
| Parameter | Value |
|---|---|
| Connector size | 5.5 mm outer diameter, 2.1 mm inner diameter (DC barrel jack) |
| End A | Male barrel plug (goes into device) |
| End B | Female barrel jack (accepts adapter plug) |
| Wire gauge | 22 AWG |
| Conductor material | Copper |
| Insulation | PVC |
| Rated voltage | 5 V or 12 V DC (passthrough — same as your adapter) |
| Rated current | 3 A continuous |
| Maximum power | 36 W at 12 V (3 A x 12 V) |
| Length options | 0.5 m, 1 m, 1.5 m, 2 m, 5 m, 10 m |
| Polarity | Center positive (standard) |
| Jacket color | Black or white (selectable per variant) |
| Internal SKU | 54G-CBL-EXT-001 |
Technical data sourced from manufacturer documentation.
What's Included
- 1 x 5.5 x 2.1 mm DC extension cable, male-to-female terminated (per selected length and color)
Compatibility & Applications
This extension fits any device or adapter that uses the 5.5 x 2.1 mm center-positive DC barrel jack standard. Typical applications include:
- CCTV security cameras (the dominant 12 V power input on consumer cameras)
- LED strip lights and controllers
- Wireless routers, mesh access points, and fiber ONTs
- External hard drive enclosures and small NAS devices
- Hobby projects and breadboard prototyping with bench supplies
- Audio equipment with 12 V DC input (mixers, small amps, signal processors)
Not compatible with: 5.5 x 2.5 mm jacks (different inner diameter — will be loose or not fit), center-negative devices (polarity reversal will damage the load), USB-powered devices, or applications drawing more than 3 A continuous (use a heavier-gauge extension or run a dedicated cable).
Why Trust Us
Operated for 5+ years across 35+ countries by a UK-incorporated company specializing in renewable energy and small-electronics components. Every order ships with tracked delivery, a 30-day return window, and a manufacturer-backed warranty against defects. Technical questions are answered by email at info@54energy.net. Last updated: May 2026.
Frequently Asked Questions
How is this different from the DC pigtail cables in the same category?
This extension is fully terminated on BOTH ends — a male barrel plug on one end and a female barrel jack on the other. Pigtail cables have a barrel connector on one end and BARE WIRE on the other, so you have to solder or crimp them into a custom harness. Buy this extension when you want plug-and-play; buy a pigtail cable when you are building or modifying a power harness.
Will it work with my CCTV camera or LED controller?
Yes, if your device uses the standard 5.5 x 2.1 mm DC barrel jack — which is the dominant 12 V consumer input. Look at the round power connector on your device or adapter: if it has roughly the diameter of a pencil tip and the inside hole is slightly thicker than a paper clip, it is 5.5 x 2.1 mm. If the connector is visibly larger or smaller, measure with calipers before ordering.
How long can the extension be before voltage drop becomes a problem?
For a 12 V device drawing 1 A or less, the 10 m variant introduces minor voltage drop (well under 0.5 V) that virtually no consumer device cares about. For loads near the 3 A maximum, voltage drop becomes more significant on the longer variants — you may notice dimmer LED strips or unstable cameras at 10 m drawing 2.5–3 A. For long high-current runs use 18 AWG cable or step up to 24 V devices.
How fast does shipping take?
Orders are dispatched from regional fulfillment partners in North America, Europe, and Asia. Typical delivery is 5 to 15 business days depending on destination country, with tracked shipping included. Specific timelines per destination are listed in the Shipping Policy.
How does this extension compare to others in its category?
Within the DC barrel-jack extension category, the meaningful comparison points are conductor gauge, length range, and connector quality. This product uses 22 AWG copper at 3 A, six length options from 0.5 m to 10 m, and a fully terminated male-to-female design — the configuration that fits the largest installed base of CCTV, LED, and small-router applications and drives the lowest return rate within our power-cable category.
Can I request a quote or estimate?
No need to request quotes or estimates. You can purchase all products online directly on our website. Accepted payment methods are credit card, debit card, and Apple Pay, processed securely via Stripe.
