The Performance System has everything you need for an easy system to specify, install and operate. This installed system includes a stationary transmitter and universal antenna kit, rack mounting kit, LR-400 receivers with ear speakers, alkaline batteries and Assistive Listening Notification Signage Kit. You can also substitute any product to better meet your needs such as a different antenna or portable receiver. Use this system for auditory assistance, audio/video recording feed and press feeds. Great for schools, houses of worship, stadiums, and courtrooms.