A two-way communicator is a device that allows two people to communicate with each other. The term 'two-way communicator' can refer to a variety of devices, such as an intercom. An intercom is a two-way communication system that allows two or more people to talk to each other over a distance. It is typically used in homes, offices, and other places where people need to communicate with each other without having to be in the same room. Intercoms are also used in public places such as airports and train stations.