Real-Time LED Voltage Display: This marine switch panel features a bright LED voltmeter that accurately shows voltage status, enhancing safety by indicating normal voltage levels. The illuminated display ensures visibility in low-light conditions, supporting efficient charging operations. Built-In Safety Mechanisms: Equipped with overheat, overcurrent, and overcharge protection, this 12V USB outlet panel ensures safe and reliable performance. The sturdy aluminum panel is waterproof and dustproof, designed to withstand demanding environments and deliver durable functionality. Space-Saving and Durable Design: The compact construction allows for efficient space utilization. Constructed from robust materials, it offers a sleek, high-quality appearance and practical utility, making it a valuable addition for marine or automotive applications. Versatile 4-in-1 Functionality: This multifunctional panel includes a USB outlet, LED voltage display, cigarette lighter socket, and a lighted toggle switch. Featuring dual USB ports (5V/2.4A each) and compatible with a voltage range of 9-24V, it provides a practical upgrade for vehicle functionality. Color: Black Material: Plastic Type: Red Light/Blue Light Package Contents: 1 x Switch Panel Note: Light reflection and different display settings may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm.