This Sennheiser EM 100 G2 wireless receiver operates in the 518 - 554 MHz frequency 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 easy. First, you'll need to get a compatible power supply and antennas since they're not included. Connect the power supply to the receiver and then attach the antennas. Before turning it on, double - check your country's wireless frequency laws to avoid any legal issues. When using it, keep it in a dry and cool place. For maintenance, clean the exterior regularly with a soft cloth. If you notice any problems, don't try to repair it yourself. Instead, contact Sennheiser's customer service.