This Audio - Technica wireless bodypack transmitter operates in the 487 - 507 MHz range. Before buying, make sure to check your country's wireless frequency regulations as some frequencies may be illegal in certain areas. Batteries aren't included. It has only undergone power - testing.

To use this Audio - Technica wireless bodypack transmitter, first, make sure to check if the frequency range (487 - 507 MHz) is legal in your country. Since batteries are not included, you'll need to insert the appropriate ones before use. When using it, keep it in a proper position on your body to ensure good signal transmission. As for maintenance, keep it in a dry and clean place. After each use, turn it off to save power. Also, regularly check for any signs of damage. And always remember to follow your local wireless frequency laws.