Feature: 1. Versatile Compatibility: The DC power cable is equipped with a 5.5mm x 2.5mm DC connector. Outer diameter 5.5mm, inner diameter 2.5mm. The outer is negative - and the inner is positive +. 2. Generous Length: With a generous 93cm (37 inch) power cable, this adapter provides sufficient length to conveniently connect your devices. Please make sure to check the length to meet your needs before purchasing. 3. Robust Safety Features: Equipped with five safety features, including overheating, short circuit, undervoltage, overvoltage, and overcurrent, this adapter prioritizes the safety and durability of your devices in any environment. 4. Efficient Power: This adapter delivers a DC output of 15V @ 3A, ensuring efficient power supply. We recommend using it at 80% of full load for excellent performance. 5. Wide Range of Applications: This power adapter is suitable for LED advertising posters, LED displays, luminous letters, light strings, lamp modules, security, surveillance, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instrumentation. Specification: Item Type: DC Power Adapter Material: ABS Output DC Interface: 5.5mm x 2.5mm with spring clip, also compatible with 5.5 x 2.1mm Application: LED advertising signs, LED displays, luminous letters, light strings, light string modules, security, scientific research equipment, LED lighting, industrial control equipment, power equipment, instruments and meters, semiconductor cooling and heating, air purifiers, electronic refrigerators, LCD screens, LED lamps, audiovisual products, security, computer cabinets, small TVs, 2.5-inch mobile hard drives, mobile DVD players, TV boxes, wireless audio and video equipment, charging equipment, MP3 MP4, small table lamps, routers, switches, game consoles, phones, colored lights, cameras, surveillance equipment, digital controllers and other home and portable devices. DC Output: 15V 3A 45W Length: Approx. 93 cm / 37 inches. Package List: 1 x Adapter