The 470 to 698 MHz UA864US Wall-Mounted Wideband Antenna by Shure is for improved RF reception for wireless microphones. It is used in permanent installations for applications such as boardrooms, lecture halls, conference rooms, and more. It features a low-profile enclosure that can be mounted on a wall, ceiling, or metal surfaces. The paintable, neutral white housing allows the antenna to blend into corporate or classroom settings. The UA864US is built with a 4-position selectable gain switch and provides attenuation and boost settings to match the antenna to the environment.