This unit doesn't come with an external power supply. There's a known issue where the -3 indicator light doesn't work.

To use this Williams Sound PPA T45 NET D FM Transmitter with Dante, first, note that you'll need to provide your own power supply as it's not included. When you start using it, be aware that the -3 indicator light won't work. As for maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If you face any other issues, it's a good idea to contact a professional technician for help.