This Sennheiser EM 100 G2 wireless receiver operates in the 626 - 662 MHz range. Note that due to the frequency range, it's not legal for use in the U.S. Always check your country's wireless frequency laws before buying. Also, this unit comes without a power supply and has only been power - tested, with no antennas included.

Using this Sennheiser EM 100 G2 wireless receiver is easy. First, make sure you have a suitable power supply as it's not included. Connect the receiver to your audio system. Remember, because of its 626 - 662 MHz frequency range, check your country's laws on wireless frequencies before using it. When it comes to maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. Also, since it doesn't come with antennas, if you add them later, handle them gently to prevent damage.