This Sennheiser EM 300 G2 wireless receiver operates in the A2 band, 518 - 554 MHz. 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.

Using this Sennheiser EM 300 G2 wireless receiver is straightforward. First, make sure you've got a suitable power supply and antennas as they're not included. Check your local wireless frequency laws to ensure you're using a legal frequency range. When using, place the receiver in a stable position away from sources of interference. For maintenance, keep it clean and dry. Regularly check the connections to ensure a stable signal. If you face any issues, refer to the user manual or contact Sennheiser support.