A1 Band operates at 470.100 - 537.575 MHz. Before buying, check your country's wireless frequency regulations as some frequency ranges may be illegal in certain countries. This product doesn't include batteries.

To use the Lectrosonics HHA - A1 handheld wireless transmitter, first make sure it's in a legal frequency range in your country. Since it doesn't come with batteries, you'll need to insert your own. Turn it on and pair it with your receiver. When using, keep it within a reasonable distance from the receiver to ensure a stable signal. As for maintenance, keep it clean and dry. Avoid exposing it to extreme temperatures or moisture. Store it in a safe place when not in use.