Far from being relics of the past, modern home intercom systems are feature-rich communications devices. After researching several popular options and interviewing home security and tech experts, our ...

The circuit provides a simple illustration of a door phone intercom system having a two-way communication using the features of LM386 amplifier. Intercom – short for intercommunication, is an ...

Anyone who attended a U.S. high school probably started each day with announcements over the intercom. Remember hearing about the daily cafeteria specials and reminders to turn in forms? Those ...