Using this Shure ULXS4 wireless receiver is simple. First, you'll need to get a suitable power supply and antennas separately. Connect the power supply to the receiver to turn it on. Then, attach the antennas to ensure a strong signal. When using, always keep in mind your country's wireless frequency laws. Don't use frequencies that are illegal in your area. For maintenance, keep the receiver in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If there's any problem, you can contact Shure's customer service for help.