This Sennheiser EM 100 G3 wireless receiver operates in the 516 - 558 MHz range. Note that it doesn't come with a power supply. Before you buy, make sure to check your country's wireless frequency regulations as some ranges may be illegal in certain countries.

Using this Sennheiser EM 100 G3 wireless receiver is simple. First, connect it to your audio system. Since it doesn't have a power supply, you'll need to use your own compatible power source. Before using it, check your country's wireless frequency laws to make sure you're not breaking any rules. When it comes to maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If you notice any issues, contact Sennheiser's customer service for help.