100 Selectable frequencies on each channel, up to 20 sets can be used at the same time Automatic frequency scanning to find and set the most clear channel, avoiding dropout. Automatic transmitter setup, the channel of the transmitter and receiver can easily synchronize Backlit LCD display showing RF level, AF level, Channel Frequency and mute status Range: Up to 400 feet ( 120 meters ). Frequency: 530Mhz - 580Mhz ( Adjustable )