Real-Time LED Voltage Display: This marine switch panel features a bright LED voltmeter that accurately shows voltage status, enhancing safety by alerting you to normal voltage levels. Its illuminated display ensures visibility in dark conditions, catering to all your charging needs effectively. Built-In Safety Mechanisms: Equipped with overheat, overcurrent, and overcharge protection, this 12V USB outlet panel ensures safe and reliable operation. The sturdy aluminum panel is waterproof and dustproof, crafted to withstand diverse environments and guarantee long-lasting performance. Space-Saving and Durable Design: The compact construction of this outlet socket panel allows for efficient use of space. Made from robust materials, it adds a touch of high-quality style and practicality to any vehicle, making it an indispensable accessory for your marine or automotive needs. Versatile 4-in-1 Functionality: This multifunctional panel includes a USB outlet, LED voltage display, cigarette lighter socket, and a lighted toggle switch. With dual USB ports (5V/2.4A each) and a voltage range of 9-24V, it's an essential upgrade for enhancing the functionality of your vehicle. Color: Black Material: Plastic Type: Blue Light Package Contents: 1 x Switch Panel Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement may vary by +/- 1-3 cm.