The Ultimate Guide to Intercom Systems: Wireless, Wired, Video, and More

An intercom system is a two-way electronic communication device designed for transmitting and receiving audio and/or video transmissions. With the advent of cellular communication, digital telephone systems, and other innovative communication technologies, modern intercom systems have evolved to integrate these advancements.

Types of Intercom Systems

Intercom systems come in a variety of types, each designed to cater to specific needs and environments. Here’s an overview of the most common intercom systems:

 

Wireless Intercoms

Wireless intercom systems are ideal for applications where wiring is impractical or impossible. These systems include a range of two-way communication devices such as handheld radios, outdoor wireless callboxes, and traditional desktop units. The transmission range of these units varies widely depending on the technology used. For example, two-way radio intercoms can transmit up to a mile, and their range can be extended with external antennas. Operating on UHF and VHF frequencies, these systems provide long-range communication and can integrate with existing two-way radios.

Wi-Fi intercoms are now available for doors, gates, or apartments, offering the flexibility of wireless communication within the range of the Wi-Fi network. Cell phone intercoms function as wireless intercoms with virtually unlimited range, relying on cellular service at the intercom's location.

Some advanced wireless intercom systems, such as license-free MURS base stations, offer more than basic communication. They can broadcast messages to other stations and connect with amplified wireless PA units. Two-way conversations are facilitated through outdoor wireless callboxes, while customer service callboxes can activate pre-recorded messages when a button is pressed.

For those seeking a simple, short-range, home-quality wireless intercom, various options are available from Chinese manufacturers on platforms like on Amazon here: Amazon

Wired Intercom Systems

When wiring between locations is feasible, wired intercom systems provide enhanced privacy and eliminate potential interference from neighboring wireless systems. These systems can use various wire types, including 2-wire shielded cables or CAT-5/6 cables. CAT-5 intercoms are commonly used for door or gate applications. Wired units are often preferred for video intercom systems due to the challenges of transmitting large amounts of video data wirelessly. Our 10-Call Master System enables communication between multiple substations and a master station. Additionally, VoIP intercoms, using Ethernet wiring, offer superior audio quality and can integrate with existing VoIP telephone systems.

Video Intercoms

Video intercom systems typically feature an entrance unit with a camera, speaker, and push button, and an internal monitor unit. These systems allow users to see and communicate with visitors at the entrance. Most video intercoms are wired to ensure reliable video transmission over long distances. However, some multi-tenant intercoms use Wi-Fi connectivity to facilitate communication within apartments. We also offer a CAT-5 video system that can be converted to wireless using networking equipment.

Apartment Intercoms

Apartment intercom systems consist of a door unit at the entrance and individual units within each apartment. These systems enable tenants to communicate with visitors and grant access. Basic systems are wired, allowing tenants to use a wired station to talk to visitors and unlock the door. Advanced systems use cellular technology to provide the same functionality via mobile or landline phones, even when tenants are not home. Cutting-edge cloud-based systems offer features like video, QR code entry, and integration with voice assistants such as Amazon Alexa or Apple Siri.

Two-Way Radio Intercoms