ITEM NAME:1 Gang Blue LED Rocker Switch Panel Voltmeter 4.2A Dual USB Port 12V Outlet Product Description Description: 1 Gang Car Marine Boat Rocker Switch Panel Digital Voltmeter 4.2A Dual USB Ports 12V Cigarette Lighter Socket Outlet Features: 1. High-performance IC, stable output current, dual USB car charger ports + cigarette lighter socket, large capacity for general navigation, tablet charging! 2. USB with LED indicator, voltmeter blue light display. 3. High current resistance, high temperature and wear resistance. 4. With waterproof cover, it can be covered with rubber cover to protect it from dust and water. 5. Wiring reverse protection. 6. Can know if the battery voltage is within the normal use range. Specifications: Product weight: 128g Product color: black Product size: length 10.3cm* width 8.5cm* height 6cm/4.06*3.35*2.36" Accessories: 4 screws, 9 blue terminals Input voltage: 12-24V Output current: 5V 4.2A Voltmeter measurement range: 6-33V Product material: ABS Cigarette lighter input voltage: 12V 20A, 24V 10A Wiring: The back of the panel is marked with "+" "-", can be connected to the positive and negative poles of the power supply. Installation range: suitable for all 12-24V cars, RVs, yachts, ships and engineering vehicle. Installation method: first use the hole opener, put the product in, and then tighten with the threaded ring! Notes: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. Included: 1 Set X Switch Panel.High current resistance, high temperature and wear resistance. Wiring reverse protection. Included: 1 Set X Switch Panel. Product color: black. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.