This Sennheiser EM 500 G2 wireless receiver operates in the 740 - 776 MHz frequency range and is designed for use outside the U.S. Before buying, make sure to check your country's wireless frequency laws. Some frequency ranges may be illegal depending on the country. It comes without a power supply and antennas. Also, note that there's adhesive residue on the screen.

Using this Sennheiser EM 500 G2 wireless receiver is simple. First, make sure to check your country's wireless frequency laws as it's for use outside the U.S. Since it doesn't come with a power supply, you'll need to get one separately. Connect it to your audio system following the standard procedures. When it comes to maintenance, keep it in a dry and clean place. To clean the screen, use a soft cloth. Don't forget, the screen has some adhesive residue, so be gentle while cleaning. And always store it properly when not in use to ensure its longevity.