This Sennheiser EM 100 G2 wireless receiver operates in the 518 - 554 MHz range. Note that it doesn't come with a power supply or antennas. Before buying, check your country's wireless frequency regulations as some frequency ranges may be illegal in certain countries.

To use this Sennheiser EM 100 G2 wireless receiver, first, make sure you have 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. When setting it up, connect it to your audio system properly. For maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If you encounter any issues, refer to the user manual or contact Sennheiser support.