When shopping for an
you'll see both the terms door phone and intercom used. What's the
difference between a door phone and an intercom? These terms are
often used interchangeably, even in the same product description.
A door phone is a system that enables you to receive "calls" from
your front door or some other door on the outside of your building.
When someone arrives at an outside door, they press a button that
alerts one or multiple inside stations and then the people inside
the building can talk to them by pressing a button on an inside
The first decision to make before purchasing a door phone intercom system for residential or business
is whether to purchase a wired or wireless system. The second
decision is whether you need an audio only or a video intercom.
The cost of installing a wired system is often prohibitive for pre-existing
buildings. Unless you install the wire yourself, you'll usually end up hiring an
electrician to come out to do the installation and this can be very expensive.
For buildings under construction, it's always best to install a wire whether you
plan to use it or not since you will never have the opportunity to install it so
You can quickly install wireless systems by yourself and they usually work
very well. How well a wireless door phone system will work for you depends on
the distance between the door unit and the inside station, building
construction, and anything that may interfere with the wireless signal. To learn
more about the range of wireless, see this article:
two way radio range.
Whether you need an audio only system or a video system depends mainly on the
level of security you need. If you plan on opening the door remotely and need to
see who is at the door, you'll need a
video door phone. If you just need to talk to whoever is at the door, an
audio only system is all you need.
To see what type of door phones are available click here:
door phone intercoms