A Tour guide system is a set of equipment that provides a person with the means to address either an individual or a group of people wirelessly. It consists of, a transmitter with microphone for the person speaking, and receivers with earphone/headphones for the listeners. The Listen Technologies RF863 system is a one-way tour guide system. A wide range of accessories are available for use in a wide range of environments from quiet museum visitor tours to staff meeings in noisy workshops.