4 Gang Rocker Switch Panel With Circuit Breaker Dual USB Socket Power Socket Voltmeter 4 Gang Rocker Switch Panel Specification 1. 4 gang rocker switch panel with circuit breaker, dual USB socket, power socket and voltmeter. 2. 100% brand new with premium quality, widely used in 12V-24V vehicles, boats, RVs, tractors and marine applications. 3. Built-in circuit breaker protects your electrical system from overload and short circuit. 4. Dual USB charging ports work with all