This Sennheiser EM 300 G2 wireless receiver operates in the 518 - 554 MHz A2 band. 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 to use. What you get: no antenna and no power supply.

To use this Sennheiser EM 300 G2 wireless receiver, first, make sure you have a suitable power supply as it's not included. Also, you'll need to get your own antennas. Before using it, check your country's laws about wireless frequencies to avoid any legal issues. When setting it up, connect it to your audio system following the standard procedures. To keep it in good condition, store it in a dry and cool place. Avoid exposing it to extreme temperatures or humidity. Regularly clean the exterior with a soft, dry cloth. If you have any problems, refer to the user manual or contact Sennheiser's customer support.