DC Female Power Cable (5.5×2.1 mm) — Simple, Safe & Reliable Power Adaption

The DC Power Cable (Female) with a standard 5.5×2.1 mm jack is a practical pigtail adapter designed for low-voltage devices such as CCTV cameras, LED strips and controllers, network routers, DVR/NVR recorders, mini amplifiers and other 12V DC electronics. Instead of cutting original power supplies or dealing with loose barrel connectors, this pre-terminated female jack gives installers and hobbyists a clean, repeatable way to build solid DC connections in seconds.

The barrel receptacle accepts the most common 12V/2A wall adapters found in security and lighting installs. On the tail side, pre-tinned copper leads make splicing faster, whether you are extending cable runs, joining to screw terminals, or wiring into distribution blocks. Clear polarity markings help you maintain center-positive wiring to protect sensitive electronics. A flexible PVC jacket and molded strain relief help resist daily bending during maintenance or repositioning.

In camera networks, a handful of these female pigtails allows you to adapt a central 12V PSU to multiple cameras through a splitter or terminal block. In LED signage, they simplify quick swaps of controllers and dimmers. For IT benches, they are a staple accessory for powering dev boards, modems and test rigs without sacrificing the original adapter tip. Because this is a passive adapter, there are no drivers or firmware—just plug, match polarity, and power.

Best practice: keep wire runs reasonable for the load, use adequate gauge when extending, and confirm your supply’s current capacity. The 5.5×2.1 format is extremely common, but some devices use 5.5×2.5 mm; if a plug feels loose or intermittent, verify the size before forcing the connection. For outdoor or high-moisture installs, use heat-shrink or junction boxes to add environmental protection around the splice.

Key Features

• Universal DC jack: accepts standard 5.5×2.1 mm barrel plugs used with 12V adapters.
• Fast splicing: pre-tinned copper leads save time on screw terminals and solder joints.
• Clear polarity: printed (+/–) indicators help maintain safe center-positive wiring.
• Durable build: molded strain relief and PVC jacket for repeated plug/unplug cycles.
• Low-voltage ready: ideal for CCTV, LEDs, routers, small amps, DIY and lab benches.

Specifications