Using this Shure wireless system is easy. First, connect the ULXS4 receiver to your audio equipment. Then insert the appropriate batteries into the ULX2 handheld transmitter (batteries are not included). Turn on both the receiver and the transmitter. You're now ready to use it for your performance or presentation. When using it, always check your country's wireless frequency laws to avoid any legal issues. As for maintenance, keep the system clean and dry. Avoid exposing it to extreme temperatures. If you notice any further damage or issues, it's best to contact a professional for repair.