This Sennheiser EM 500 G2 wireless receiver operates at 740 - 776 MHz and is for use outside the U.S. Before buying, make sure to check your country's wireless frequency regulations as some frequency ranges may be illegal. Note that it doesn't come with a power supply or antennas.

To use this Sennheiser EM 500 G2 wireless receiver, first, you need to get a suitable power supply and antennas as they are not included. Check your local wireless frequency laws to ensure you're using a legal frequency range. When setting it up, connect the antennas properly and power it on. Keep it in a dry and cool place to avoid damage. If there are any issues, refer to the user manual or contact Sennheiser support. Regularly check the connections to make sure they are secure for optimal performance.