This Sennheiser EM 100 G3 wireless receiver operates in the B frequency range of 626 - 668 MHz. Note that due to the frequency range, it's not legally usable in the U.S. Before buying, check your country's wireless frequency laws. Some countries may ban the use of this frequency range. The unit comes with one antenna and the correct power supply.

Using this Sennheiser EM 100 G3 wireless receiver is easy. First, connect it to the correct power supply that comes with it. Then, set up the antenna for the best signal reception. Before using, make sure to check your country's wireless frequency laws because the 626 - 668 MHz range might be illegal in some places. When it comes to maintenance, keep the receiver in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. If you encounter any issues, refer to the user manual or contact Sennheiser's customer support.