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 aluminum panel is waterproof and dustproof, designed to withstand harsh environments and deliver durable functionality. Space-Saving and Durable Design: The compact design allows for efficient space utilization. Constructed from robust materials, it offers a sleek, high-quality appearance and practicality 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 reliable upgrade for vehicle electrical systems. Color: Black Material: Plastic Type: Red Light/Blue Light Package Contents: 1 x Switch Panel Note: The actual product may vary slightly in color due to lighting and display differences, which does not affect functionality. Measurement may vary by +/- 1-3 cm.