Using this Sennheiser EM 100 G2 wireless receiver is easy. First, you'll need to get a compatible power supply and antennas as they're not included. Connect the power supply to the receiver and then attach the antennas. Before turning it on, double - check your country's wireless frequency laws to avoid any legal issues. When it comes to maintenance, keep it in a dry and clean place. If it gets dirty, use a soft, dry cloth to wipe it. Don't expose it to extreme temperatures or moisture. This will help keep your receiver working well for a long time.