This unit doesn't come with a power supply. Before buying, check your country's wireless frequency regulations as some frequency ranges may be illegal in certain countries.

Using this Sennheiser ASA 1 Active Antenna Splitter is straightforward. First, make sure you have a suitable power supply as it's not included. Before using it, check your country's wireless frequency laws to avoid any legal issues. When you've confirmed it's legal in your area, connect it properly according to the basic connection instructions. For maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If you notice any problems, it's best to consult a professional.