Intercoms are one way or 2 way communication systems. Intercoms were analog in the past but are now IP compatible which can complete any surveillance system with audio. Intercom communications allow for both listening and communication with the party on the other end of the surveillance camera. There are a variety of configurations for intercoms, our knowledgeable staff can assist in helping pick out the best set-up for your needs. Visit the 2MCCTV store or simply call us and we will be happy to talk to you.