Usage Tips: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 a 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. The actual product may have slight color difference or difference, which will not affect the use Colour:Black Material:plastic type:Red light/Blue Light Package Contents: 1 x Switch Panels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.