The Advanced Installed IR System provides great signal coverage in a venue while keeping the overall cost of the system low. Because the LS-82-SIR includes rechargeable batteries and a charging station, it is ideal for frequent use. Includes eight stetho receivers, NiMH rechargeable battery packs and a charging station. The system can cover up to 20,000 square feet. Listen�s IR systems are designed for applications that require the audio signal to be isolated for security or other reasons, such as assistive listening, soundfield, language interpretation, live theater, houses of worship, courtrooms, secure rooms, and for auditory description. Custom systems available.