Intercom systems come in audio and audio video formats, with a wide range of external door station and internal handset choices. Standard 2 wire to future proof IP intercoms.
They vary from a 1 button door station to 1 handset to systems consisting of multiple door stations calling multiple apartments/offices, and can be wired or networkable depending on the system with facilities for the user to accept calls via a handset / monitor, an app on a smart device or an IP phone system.
There are also GSM intercom options ideally suited to remote sites or where cabling is an issue.
We use Comelit intercoms and 2N intercoms.