Discover the ultimate solution for powering your devices with our versatile Speaker Power Supply Adapter Charger. Designed to meet a wide range of needs, this adapter ensures reliable performance and safety for your electronic equipment. 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 variety of devices. EASY TO USE: Enjoy hassle-free operation with a 93cm/37in cord length that includes a circlip for secure connections. The plug-and-play design makes it simple to use, while the lightweight and durable ABS material ensures long-lasting performance. WIDE APPLICABILITY: This power supply adapter is perfect for a broad spectrum of devices, 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 systems, 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 PROTECTION AND SECURITY GUARANTEE: Our adapter charger is equipped with multiple safety features, including over-temperature protection, short circuit protection, under-voltage protection, over-voltage protection, and over-current protection, ensuring your devices are always safe and secure. INPUT AND OUTPUT: The power supply supports a 50-60Hz AC input and delivers a 13.5V 1.5A DC output. For optimal performance, it is recommended to use less than 80% of the full load capacity. Avoid overloading to maintain the longevity and efficiency of the adapter. Upgrade your power supply needs with this reliable and efficient adapter, designed to provide consistent power and protection for all your electronic devices. Whether for home, office, or industrial use, this adapter is your go-to choice for dependable performance.