Features: Made of firepeoof material, safe and durable in use. Easy to install, and can be used for all 12V-24V cars, trucks, buses, trailers, RV, marine boats, etc. Multifunctional:8 Toggle switches, dual USB charger, cigarette lighter socket and LED voltmeter. USB port can charge phones, tablets, cameras, GPS, wireless headphones, etc. Voltmeter help you keep an eye on battery voltage, maintenance of the battery, extended battery life. Specifications: Material: ABS+PC+Aluminum Color: Black Rocker Switch: 8 Switch Type: On-Off Input Voltage: DC 12V/20A, 24V/10A Cigarette Socket: 12V/24V USB Output: 5V 2.1A+2.1A Waterproof: IP66 Package Included: 1 x Switch Panel 1 x Labels 4 x Fixing Screws Note: Please allow 1-3cm error due to manual measurement. The colors may be a little difference for the different monitor display. About 4 IN 1 Switch Panel A: Features: Easy to install, and can be used for all 12V/24V cars, buses, RV, ships, yachts, etc. Charge 2 Devices at High Speed Simultaneously,4x faster charging speed than other! Total Power Up to 120W (12V) / 250W (24V) & Car Cigarette Lighter Socket Plug With LED voltage monitoring function, it can automatically display the car voltage It conserves electricity and doesn"'"t drain any power when switched off Specification: Material: PC Voltage: DC 12/24V Out Power:120-250W USB Out Power:18W+18W Color: Blue ,Green Interface: USB2.0 Item Type: Cables, Adapters & Sockets Size:As picture Package Included: 1 x Switch Panel 4 x Screws About 4 IN 1 Switch Panel B: Specification:Material :ABS Suitable:Universal Car ,Boat,Truck Color: Blue/Green/RedWeight: 152gUSB socket output: DC 5V / 4.2A Power outlet: DC 12V Voltmeter display range: 6 - 30V. Size:See the picture Package Included: 1x Switch Panel Combination Do drop