The Basic Courtroom System, model WIR?SYS?1, is the complete hearing assistance solution for the courtroom. Listeners wear wireless RX22-4 receivers to hear the proceeding anywhere up to 28,000 ft2 area**. For the severely hard of hearing, the RX22- 4 can be equipped with a neckloop (included) to amplify their telecoil equipped hearing aid. SoundPlus infrared technology ensures privacy and security: the message of the proceeding doesn't travel outside the walls of the courtroom.