Anchor Audio’s Assistive Listening System helps students block out background noise while focusing on the instructor. Teachers can speak directly to their students from up to a quarter mile away using this UHF wireless transmitter and headset microphone. Project loud, clear sound to an unlimited number of headsets. You can configure different listening groups within the same classroom, as long as all members of each group are set to the same channel. Choose from three system packages: the basic package includes one transmitter and four receivers; the deluxe package includes a transmitter, four receivers and a transmitter with microphone; the tour guide package includes a transmitter, a headband microphone, and six receivers.