This Sennheiser EM 100 G2 wireless receiver operates in the 740 - 776 MHz frequency range. Note that due to this frequency, it's not legally usable in the U.S. It comes without a power supply and antennas. Before buying, check your country's wireless frequency rules as some 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 as it's not included. Connect the power supply properly to make it work. Also, you'll have to attach your own antennas. When using it, always keep in mind the frequency range it operates in, 740 - 776 MHz. Before you start using it, make sure it's legal to use this frequency range in your country. To keep it in good shape, clean it gently with a dry cloth regularly. Avoid exposing it to extreme temperatures or humidity. If you face any issues, refer to the Sennheiser support for help.