How to use: First, connect the Shure P2T - H2 PSM200 IEM TransMixer to your own power supply. Then, make sure it's tuned to the H2 Band frequencies (518 - 554 MHz). You're good to start using it for your wireless audio needs. Important notes: Always check your country's wireless frequency laws before using. Using an illegal frequency range can get you in trouble. Maintenance advice: Keep the device in a dry and clean place. Wipe it gently with a soft cloth if it gets dirty. Don't expose it to extreme temperatures or moisture.