Feature: 1. DC Interface: Features a DC interface with an outer diameter of 5.5mm and an inner diameter of 2.5mm, utilizing a polarity of negative (-) on the outer and positive (+) on the inner, suitable for a variety of devices. 2. Versatile Use: This power cable is suitable for charging and powering LED signboards, LED displays, industrial control equipment, communication devices, home appliances, mobile DVD, MP3, MP4, router, switcher, gaming console, and more. 3. Comprehensive Protection: Equipped with multiple protection functions including over temperature, short circuit, under voltage, over voltage, and over current protection, ensuring secure and stable operation for your electronic devices. 4. Compact and Portable: Designed with a small and lightweight construction, this power supply adapter is easy to carry for daily use or travel, fitting seamlessly into luggage or backpacks. 5. Wide Compatibility: Specifically designed to serve as a charging solution for electronic equipment and audio systems, this 18V 2A power adapter with a 5.5x2.5mm interface ensures efficient power delivery for various applications. Specification: Item Type: Power Supply Adapter Product Material: ABS Output DC Interface: Outer Diameter 5.5mm, Inner Diameter 2.5mm, with spring clip; also compatible with 5.5x2.1mm Cable Length: Approx. 93cm / 36.6in Application: LED signboard, LED display, luminous letters, lamp module, monitoring systems, scientific research equipment, LED light fixtures, industrial control equipment, communication equipment, power equipment, instrumentation, semiconductor cooling and heating, air purifier, electronic refrigerator, LCD, audio visual products, security systems, computer chassis, small TV, 2.5-inch mobile hard disk, mobile DVD, charging equipment, MP3, MP4, small desk lamp, router, switcher, game console, color lights, camera, controller, digital devices, and other home or portable equipment. Package List: 1 x Power Cord Note: 1. Power cord length is approximately 93cm (37in). Please confirm the length meets your requirements before purchasing. 2. DC output: 18V 2A 36W. It is recommended to operate at less than 80% of full load. Do not overload.