: Specifically designed to replace old, built-in systems, these can often reuse existing 3- or 4-wire infrastructure. Key Features to Prioritize
Wired vs. Wireless Intercom: Which is Right for You? - LEELEN
: These offer the highest reliability, superior audio/video quality, and better security against hacking. They are ideal for new constructions where running cables through walls is feasible.
: Utilizing Wi-Fi or radio frequencies, these are the easiest to install, making them perfect for retrofitting older homes. However, they can be susceptible to signal interference from metal walls or distance.