P/N: 7219A1401. This lighting control console is a great choice for lighting management but does not come with a power supply. It has a 'Next' button that functions normally, though its LED doesn't light up. It offers reliable performance for various lighting setups.

Using this ETC SmartFade ML 24/48 lighting control console is straightforward. First, you need to connect an appropriate power supply as it doesn't come with one. Once powered on, you can start controlling your lighting according to your needs. When using the 'Next' button, don't worry if the LED doesn't light up; it still works fine. As for maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. Regularly check the connections to ensure they are secure. If you encounter any other issues, it's best to consult a professional.