The multi-function switch panel kit is designed to meet your circuit and load control needs. It includes five blue LED rocker switches, a 12V cigarette lighter socket, a dual USB charger (5V 2.1A), and an LED digital voltmeter, allowing you to monitor the voltage of your electrical system. Installation of the sign is made easy with the included mounting screws. Multi-functional stickers allow you to customize the sign to your specific needs. Simply follow the instructions to attach it to your vehicle or equipment. USB ports allow you to charge two devices simultaneously, such as phones, power banks, and cameras. The cigarette lighter socket can power a variety of devices, including dashboard cameras, GPS, and vehicle-mounted refrigerators. LED rocker switches provide overload, overcurrent, and short circuit protection, ensuring the safety of your installation.