Advanced PWM Technology: Utilize cutting-edge Pulse Width Modulation (PWM) technology to smoothly adjust the brightness of your lights in RVs, campers, and boats, ensuring optimal lighting and energy efficiency Integrated QC 3.0 USB Port: Features a Quick Charge 3.0 USB port to rapidly charge your mobile devices, making it a versatile addition to your electrical setup High Capacity & Reliability: Supports up to 5A of current, suitable for a wide range of lighting applications, while ensuring durability and reliability in various environmental conditions Easy Installation: Designed for hassle-free installation, this dimmer switch can be easily integrated into your existing electrical system, providing immediate enhancement of your lighting control capabilities Due to different batches, there may be differences in product appearance and printed text, which will not affect use Color:Black Material:Plastic Package Contents: 1 * DC 12-24V PWM Dimmer Switch