DIYables 2.1 x 5.5mm DC Male Plug to Screw Terminal Block Adapter (5-Pack), Power Connector Adapter for DC Wiring, CCTV, Arduino, LED Strip, DIY Projects
Click to zoom

Quick Overview
This DIYables adapter puts a 2.1 x 5.5mm male DC barrel plug on the end of bare wire without soldering. The plug end goes into any standard DC input jack, and the opposite end is a green two-position screw terminal: strip the wire, drop it into the terminal, tighten the screw, and the connection is done. Polarity is moulded into the housing with clear plus and minus symbols beside each terminal, so centre positive wiring is unambiguous.
The terminal block is on a 5mm pitch and accepts wire from 16 to 26 AWG, which spans everything from thin signal-gauge hookup wire up to the heavier conductors used for LED strip runs and camera feeds. Because the connection is mechanical rather than soldered, a wire can be released and re-terminated as many times as needed, which makes these useful during prototyping as well as in the finished build.
Ideal for making a custom-length power lead from bulk cable, terminating a bench supply into a barrel plug, wiring LED strips and CCTV cameras to a DC source, or repairing a cut adapter cable. This listing includes 5 adapters.
Key Features
- Male Barrel Plug to Screw Terminal — Puts a standard 2.1 x 5.5mm plug on bare wire with no soldering required
- Marked Plus and Minus Terminals — Polarity symbols moulded into the housing beside each terminal for unambiguous centre positive wiring
- 5mm Terminal Pitch — Generously spaced terminals that are easy to reach with a small flat-blade screwdriver
- Accepts 16 to 26 AWG Wire — Handles thin hookup wire through to heavier LED strip and camera cable
- Re-Terminable Connection — Screws release and re-clamp, so wires can be changed during prototyping and repair
- Custom Cable Lengths — Make a lead exactly as long as the installation needs from bulk cable
- Solid Moulded Housing — Rigid plastic shell supports the terminal block and protects the joint
- Repairs Cut Adapters — Restores a damaged wall adapter lead without replacing the whole supply
- Works With DC Distribution — Pairs with barrel-jack splitters and female adapters for complete DC wiring
- 5 Pack — Five adapters for multiple leads, workshop stock, or spares
SPECIFICATION
| Specification | Value |
|---|---|
| Product Type | DC Male Plug to Screw Terminal Block Adapter |
| Connector | DC barrel plug, 2.1 x 5.5mm male |
| Wire Termination | 2-position screw terminal block |
| Terminal Pitch | 5mm |
| Wire Range | 16 to 26 AWG |
| Polarity | Centre positive, plus and minus marked on the housing |
| Terminal Colour | Green |
| Housing Colour | Black |
| Tool Required | Small flat-blade screwdriver |
| Package Quantity | 5 pieces |
| Applications | DC wiring, CCTV cameras, LED strip lights, Arduino projects, adapter repair |
※ NOTE THAT:
Observe the plus and minus markings on the housing when terminating wires. Reversing polarity can damage the connected device.
This is a passive connector with no fusing or protection. Ensure the wire gauge chosen is appropriate for the current the load will draw.
COMPATIBLE HARDWARE
- Devices with a 5.5 x 2.1mm DC input jack — Standard centre positive barrel socket
- Bench power supplies with bare lead outputs — Terminate into a barrel plug for standard equipment
- 12V LED strip lights — Wire strip leads directly into the screw terminals
- CCTV and IP cameras — Make custom-length power runs from bulk cable
- Development boards with a DC barrel jack — Feed from a battery pack or bench supply
- Battery packs and holders — Terminate loose battery leads into a standard plug
- DC power splitter cables — Feed a splitter from a custom-made lead
- Bulk two-core power cable, 16 to 26 AWG — Solid or stranded within the terminal range









