An intercom system is a two-way communication electronic device that contains circuitry for the purpose of transmitting and receiving audio and/or video transmissions.

With the advent of cellular communication, digital telephone systems, and other communication devices, the use of intercoms has declined. However, there are still lots of applications where these devices still work better than anything else. There are a very wide variety of systems available as defined below:

Wireless Intercoms: In applications where wires cannot be run, a wireless system is used. There are a broad spectrum of two-way wireless communication devices that include such devices as handheld radios, outdoor wireless callboxes, as well as traditional desktop devices. The range these units will transmit varies widely based on the wireless technology used.

Wired Intercom Systems: When you can run wires between locations, a wired system can give you a little more privacy and eliminate possible interference from neighboring systems. There are different wire types such as 2-wire shielded or Cat-5/6 that can be used with these systems. If you are considering a video system, a wired unit may be the best solution.