In stock

DC Power Pigtail 5.5x2.1mm Male

DC-55X21MM-M

A short barrel pigtail for connecting a camera or small device to a power source.

Type: Adapter
Length: 0.3 m
Connectors: DC

In-depth technical details

This connector's size is 5.5mm OD x 2.1mm ID per the product's own name -- but polarity (center-positive vs center-negative) depends on the connected device and is not assumed here; check the device's label or datasheet before connecting.

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Connector anatomy

DC barrel plug

01 Inner pin Positive by the usual convention. Reversed polarity destroys a device instantly, so never assume compatibility from shape alone.
02 Outer barrel Negative. The barrel and pin diameters (5.5 × 2.1 mm, for example) are what actually decide whether it fits.
03 Strain-relief boot Stops the wires flexing where they leave the plug — the exact point most cables fail.
04 Outer jacket The outer sheath protecting the conductors inside from abrasion and moisture.

Technical illustration, not a photo of the actual product

From the published standard

How it works

A short barrel pigtail terminates a power lead at a small device such as a surveillance camera. The inner and outer diameters (5.5×2.1 mm, for example) must match the device socket exactly, and polarity — usually centre-pin positive — must be checked before connecting; getting it backwards destroys the device immediately and nothing mechanical prevents that.

Common size: 5.5 x 2.1 mm
Polarity: Usually centre-pin positive, but must be verified
Risk: Reversed polarity causes immediate device damage

This information comes from published sources about this type of product, not from the supplier.

en.wikipedia.org

Technical specifications

Type	Adapter
Length	0.3 m
Connectors	DC

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