The Atlas Sound line of classroom hearing amplification is ideal to save the teachers voice and get their sound to the back of the classroom while improving students attention. The AL-MYNA wireless microphone allows the teacher to walk freely around the room, the mic also includes a volume control for quick and simple changes. The unit has an A and B switch allowing for up to 2 mics to be used, the mic also has a panic mode. When hooked up to a notification system press the button and you have instant emergency notification.