12V 3A AC/DC Power Supply Adapter (US Plug, 5.5mm x 2.1mm DC Barrel Connector)

Power your sensitive electronics reliably with this 12V 3A AC/DC power supply adapter. Engineered with a universal input range of AC 100V–240V and delivering a stable DC 12V 3000mA output via a standard 5.5mm x 2.1mm DC barrel connector, this regulated switching power adapter ensures safe, constant voltage. Designed with built-in over-voltage, over-current, and short-circuit protection, it is the ideal US plug replacement power source for CCTV IP cameras, 12V LED strip lights, wireless routers, and electronic audio equipment.

Key Features

• Universal AC 100V–240V Input: Accepts worldwide input voltage (50/60Hz), converting standard household AC power into a regulated DC 12V 3A output.

• Standard 5.5mm x 2.1mm DC Barrel Plug: Features a center-positive 5.5mm outer diameter and 2.1mm inner diameter DC connector, compatible with most 12V electronics.

• Multi-Layer Safety Protections: Integrated smart protection circuit prevents damage from over-current, over-voltage, over-temperature, and short circuits.

• Stable & Noise-Free Power Output: Delivers clean, low-ripple power to ensure clear video signals on CCTV security cameras and flicker-free illumination on LED strips.

Why Choose Our 12V 3A Power Supply Adapter Unlike unrated generic adapters that overheat and cause video noise or voltage drop under load, this heavy-duty 3000mA power supply transformer maintains a constant, regulated 12V DC output. Its durable flame-retardant housing and flexible strain-relief cable are built for long service life.

Perfect For

• CCTV & IP Security Cameras: Powers indoor and outdoor security cameras, DVR systems, and IR illuminators without signal interference.

• 12V LED Strip Lights: Drives single-color and RGB LED light strips, COB ribbons, and cabinet light bars safely.

• Routers & Electronics: Acts as a reliable replacement adapter for wireless routers, modems, audio amplifiers, and 12V tabletop appliances.

Technical Specifications