Using this Shure wireless system is easy. First, connect the ULXS4 receiver to your audio device. Then insert batteries into the ULX2 handheld transmitter (batteries not included). Turn on both the receiver and the transmitter, and you're ready to use it. Make sure to check your country's wireless frequency laws before using it to avoid any legal issues. When it comes to maintenance, keep the system clean and dry. If not in use for a long time, remove the batteries to prevent damage. Also, store it in a cool and dry place to extend its lifespan.