It’s no surprise that the wireless intercom is by far the more popular choice. They’re easy to use and simple to install. Basic voice-only units work via FM radio signal; those that don’t use radio are instead connected to 2.4GHz Wi-Fi, which is the standard transmitted by the majority of household internet modems.
In addition to voice, and in many cases video, wireless intercom systems are often based on smart-home hubs. These can offer a wide range of household controls and internet-related services. Smartphone integration is another possibility, allowing the home intercom to be part of a larger system incorporating home security.
Another advantage of wireless home intercom systems is that the owner’s investment is protected because the system can move whenever the family or single owner relocates.
Originally, home intercom systems were wired because Wi-Fi didn’t exist at the time. Door-entry devices are often still wired, but the majority of home intercoms are now wireless. Though wired home intercom systems are still available, they’re either designed as upgrades, to replace old units without the need to repair the holes where they were inset into walls, or as new installations.
Unlike Wi-Fi home intercom systems, fixed wall units have a known location and will never encounter an issue due to WiFi-dropouts or radio interference. Wired systems are also an effective solution in areas where the Wi-Fi signal is poor.