Discover the versatility and reliability of our Speaker Power Supply Adapter Charger, designed to meet a wide range of power needs with precision and safety. This adapter is perfect for various devices, ensuring consistent performance and protection. 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 a wide range of devices. Easy to Use: The power supply cord is designed for convenience with a 93cm (37in) length and a circlip for secure connections. Its plug-and-play functionality makes it easy to use, while the lightweight and durable ABS material ensures long-lasting performance. Wide Application: This versatile speaker charger is suitable for a variety 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 equipment, 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: Our power supply adapter charger offers comprehensive protection with features such as over-temperature protection, short circuit protection, under-voltage protection, over-voltage protection, and over-current protection. These safeguards ensure the safety and longevity of your devices. Input and Output: The adapter supports a 50-60Hz AC input and provides an 18V 3A 54W DC output. For optimal performance, it is recommended to use less than 80% of the full load capacity. Avoid overloading to maintain the adapter's efficiency and reliability. Upgrade your power solutions with our Speaker Power Supply Adapter Charger, offering unmatched compatibility, ease of use, and robust protection for all your electronic devices.