Upgrade your power solutions with our versatile Speaker Power Supply Adapter Charger, designed to deliver reliable performance for a wide range of devices. Size and Polarity: This DC power cord features a 5.5mm x 2.5mm DC plug, with an outer diameter of 5.5mm and an inner diameter of 2.5mm. The polarity is negative externally and positive internally, ensuring compatibility with various devices. Easy to Use: Designed for convenience, the speaker system charger comes with a 93cm/37in cord length and a circlip for secure connections. Its plug-and-play functionality makes it user-friendly, while the lightweight and durable ABS material ensures long-lasting use. Wide Application: This power adapter is suitable for a multitude of applications, including LED billboards, LED display screens, luminous characters, security systems, scientific research equipment, industrial control equipment, communication devices, electric power equipment, instruments and meters, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, liquid crystal displays, LED lamps, mobile DVDs, TV boxes, wireless sound and video equipment, charging devices, MP3 or MP4 players, small desk lamps, routers, switches, game consoles, color lights, digital controllers, and other household or portable equipment. Five Protecting and Security Guarantee: Safety is paramount with this power supply adapter, which includes over temperature protection, short circuit protection, undervoltage protection, overvoltage protection, and overcurrent protection, ensuring a secure power supply for your devices. Input and Output: The adapter supports a 50-60Hz AC input and provides an 18V 3A 54W DC output. For optimal performance and to extend the lifespan of the adapter, it is recommended to use it at less than 80% of its full load capacity. Avoid overloading to maintain efficiency and safety. Choose our Speaker Power Supply Adapter Charger for a dependable and versatile power solution that meets your diverse needs with ease and security.