How to use: First, find a proper location for the receiver. Connect it to other audio devices as needed. Note that this receiver is for use outside the U.S., so make sure to check your local wireless frequency laws before using. Also, since it doesn't come with a power supply and antennas, you'll need to get those separately. Maintenance advice: Keep the receiver in a dry and clean place. Avoid exposing it to extreme temperatures and humidity. If there are any signs of damage, stop using it and seek professional help.