Advanced PWM Technology: This VIPMOON dimmer operates on DC 12V-24V, handling up to 5A (60W at 12V, 120W at 24V). It features a memory function to recall your last brightness setting, ensuring a personalized lighting experience every time. Smooth and Quiet Dimming: Easily adjust your lighting from 0% to 100% with a simple turn of the knob. This dimmer provides a flicker-free and silent operation, ideal for creating the perfect ambiance in your space. Note: Not suitable for controlling fan or motor speeds. Quick Charge USB Port: Equipped with a QC3.0 USB port, this dimmer supports fast charging up to 24W. It's compatible with various charging protocols, including DCP for major brands like for Apple and for Samsung, ensuring your devices charge quickly and efficiently. Simple Installation: Featuring a 3-wire connection with clearly marked terminals for hassle-free setup ('V' for negative, 'L+' for lamp positive, 'V+' for power positive). This user-friendly design makes it easy to integrate into your existing electrical setup. Safety and Compliance: Certified by CE and RoHS, this dimmer guarantees safety and reliability. Before using, ensure your bulbs are compatible for dimming to avoid damage. Ideal for use in vehicles and boats, enhancing lighting control wherever you go. Colour:Black Material:plastic Package Contents: 1 x RV lighting device Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.