Using this Shure ULX - D wireless system is easy. First, connect the power supply to the receiver. Then, turn on the transmitter and receiver. Make sure to set them to the same frequency. When using the microphone, hold it at a proper distance from your mouth for the best sound quality. Before purchasing, always check your local wireless frequency laws to avoid any legal issues. As for maintenance, keep the system clean by using a soft, dry cloth. Avoid exposing it to extreme temperatures and moisture. Also, if you plan to use it for long periods, consider using high - quality batteries (not included). Don't forget that the receiver antennas are not part of the package, so you'll need to get them separately if you need them.