直流桶形插头（公头-母头）延长线

Universal DC barrel jack male to female extension cable for extending low-voltage DC power connections. Available in common sizes including 5.5×2.1mm and 5.5×2.5mm, with pure copper conductors, PVC jacket and molded strain relief on both ends. Suitable for 12V / 24V CCTV cameras, LED strips, routers, security systems and various DC-powered devices. Multiple gauges and lengths available.

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分类： 直流电源线

描述

This DC barrel jack male-female extension cable is a universal low-voltage power extension solution for a wide range of DC-powered electronic devices. It solves the common problem of insufficient power adapter cable length, allowing users to extend the distance between a DC power supply and the end device without modifying the original equipment. It is widely used in security surveillance, smart home installations, LED lighting systems, networking equipment, portable electronics and industrial control setups.

The cable is available in the most widely used DC barrel connector sizes, including 5.5×2.1mm, 5.5×2.5mm and 3.5×1.35mm, covering the majority of consumer and commercial DC device interfaces. The male plug inserts into the device or female power port, while the female jack accepts a standard DC male plug from the power adapter. This plug-and-play design requires no wiring or modification, making installation fast and simple for both professional installers and end users.

Internally, the cable uses high-purity copper conductors for stable conductivity and low voltage drop even over longer runs. Multiple wire gauge options are available: 22AWG for short-distance extensions of low-power devices, 20AWG for general-purpose CCTV and router applications, and 18AWG for longer cable runs or higher-power LED and industrial equipment. All versions are designed for low-voltage DC operation and are rated for typical 12V and 24V DC power systems.

Both connector ends are fully molded with integrated strain relief structures, which distribute bending stress at the cable root and protect internal wires from breakage caused by frequent plugging, pulling and installation movement. The outer PVC jacket provides good abrasion resistance and flexibility, suitable for indoor routing and sheltered outdoor installations. For permanent outdoor use, it is recommended to route the cable through conduit or a weatherproof enclosure for extended service life.

This extension cable is universally compatible with most devices using matching DC barrel jacks, including CCTV security cameras, DVR / NVR systems, wireless routers, access points, LED strip lights, LED drivers, access control devices, small monitors, desk fans, digital peripherals and more. Standard lengths range from 0.3m for short adapter connections up to 10m for long-distance building wiring. For bulk OEM orders, we support custom connector sizes, wire gauges, cable lengths, jacket colors, polarity markings, logo printing and private-label packaging.

Universal DC barrel jack male-female power extension cable
Available in 5.5×2.1mm, 5.5×2.5mm, 3.5×1.35mm and other common sizes
Pure copper conductors for stable power transmission and low voltage drop
22AWG / 20AWG / 18AWG options for different power and distance requirements
Molded strain relief on both ends for durability and fatigue resistance
PVC jacket, flexible and abrasion-resistant for indoor and protected outdoor use
Compatible with CCTV, LED strip, router, security system and most DC devices
Standard lengths: 0.3m / 0.5m / 1m / 2m / 3m / 5m / 10m
Custom size, gauge, length, color and packaging supported for bulk OEM orders

技术规格

项目	规格
连接器 A	DC Barrel Male Plug
连接器 B	DC Barrel Female Jack
Common Sizes	5.5×2.1mm / 5.5×2.5mm / 3.5×1.35mm
导体材料	Pure Copper
线径选项	22AWG / 20AWG / 18AWG
夹克面料	PVC
应力消除	两端均经模压成型
典型电压	12V / 24V 直流应用
标准长度	0.3m / 0.5m / 1m / 2m / 3m / 5m / 10m
颜色选项	黑色、白色，也可选定制颜色
应用	CCTV camera, DVR/NVR, router, LED strip, access control, security system, smart home
定制服务	Connector size, wire gauge, length, color, polarity marking, logo printing, private packaging, OEM bulk orders

常见问题解答

Q: What is a DC barrel jack male-female extension cable used for?

A: It is used to extend the distance between a DC power adapter and a DC-powered device, such as CCTV cameras, LED strips, routers and security equipment, when the original power cable is too short.

Q: What connector sizes are available?

A: We offer the most common sizes including 5.5×2.1mm, 5.5×2.5mm and 3.5×1.35mm. Custom sizes are available for bulk orders.

问：这个产品可以用于12V和24V的设备吗？

A: Yes, it is designed for low-voltage DC applications and is suitable for 12V, 24V and other common DC voltage systems within the current rating.

Q: What is the difference between 18AWG, 20AWG and 22AWG?

A: 18AWG has thicker conductors, supports higher current and longer runs with less voltage drop. 20AWG is standard for most CCTV and router use. 22AWG is for short, low-power extensions.

问：这条线缆防水吗？适合在户外使用吗？

A: The standard PVC version is suitable for indoor and sheltered outdoor use. For fully exposed outdoor installations, we recommend using conduit or a weatherproof enclosure.

Q: What devices is this compatible with?

A: It works with most devices using a matching DC barrel jack, including CCTV cameras, DVR/NVRs, routers, LED strips, access control systems, small monitors and desk fans.

问：你们接受定制订单吗？

A: Yes, we support custom connector sizes, wire gauges, cable lengths, jacket colors, polarity markings, logo printing and private-label packaging for bulk OEM orders.