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, make sure to check your country's wireless frequency regulations as some frequency ranges may be illegal in certain countries.

Using this Sennheiser EM 100 G2 wireless receiver is simple. First, you'll need to get a suitable power supply and antennas as they aren't included. Once you've connected the power supply and antennas, you can start using it within the 518 - 554 MHz frequency range. Remember to check your local wireless frequency laws before using it. 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 manufacturer's instructions or contact their customer service.