The LA-90, a compact portable inductive loop system, is ready for use as soon as you switch it on. There is no need for any additional installation. Positioned between the people holding the conversation, the LA-90 picks up the sound via an integrated microphone or an external microphone and transmits inductive signals to the integrated teleloop. They are picked up by hearing aids (set your hearing aid to »T« or »MT«). The LA-90 can be powered either via the plug-in PSU (included) or via the integrated battery.