Wireless intercoms consist of two or more units, each functioning as both the transmitter and the receiver. They do not use wiring systems; instead, they use radio frequencies to transmit and receive audio signals. Because it is wireless, a typical unit requires little or no installation. It can be plugged into a power outlet or powered by batteries.
Most wireless intercoms function as baby monitors, helmet intercoms for communicating when riding a motorcycle or race car driving, communication devices for TV and stage directors, and business communication systems for employees in an office.
Kinds of Wireless Intercoms include the following:
Two-channel wireless intercom
A two-channel wireless intercom can provide two-way communication or one-way audio monitoring. It can be expanded to accommodate four or more units.
Three-channel wireless intercom
A three-channel wireless intercom uses existing AC wires to operate. It is commonly used as a door intercom, replacing the existing push-button doorbell using the same doorbell wiring.
