Managing visitor access at a small or medium-sized business is a persistent challenge. Deliveries arrive when no one is at the front desk. Clients show up after hours. Contractors need one-time entry to multi-door locations. Traditional intercom systems address some of these problems but require dedicated hardware, proprietary wiring, and expensive installation. Alarm.com's Video Intercom Mobile Directory (VIMD) takes a different approach: it transforms the Alarm.com video doorbells and access control hardware you already have into a full video intercom system, managed entirely through the app. For businesses on the Alarm.com for Business platform through a self-managed provider like Surety, it is a low-cost way to modernize entry management without ripping out existing infrastructure.
What Is Alarm.com Video Intercom Mobile Directory?
Video Intercom Mobile Directory is Alarm.com's first intercom solution. Rather than requiring a dedicated intercom panel, VIMD uses compatible Alarm.com video doorbell cameras and access control doors already installed on your account. A visitor scans a QR code posted at the entrance, which opens a mobile web-based directory on their phone. The visitor selects the person or suite they want to reach, and the system initiates a video call through the doorbell camera. The recipient sees a live video feed with two-way audio on the Alarm.com app and can remotely unlock the associated door directly from the call screen. No app download is required on the visitor's side, and every interaction is logged. The directory is customizable with your business logo, welcome header, and help text, and can display recipient names or unit numbers depending on your privacy preferences.
How Video Intercom Mobile Directory Works
The Visitor Experience
A visitor arrives at the entrance and scans the QR code with their phone's camera—no special app needed. This opens a branded web page showing the building's directory. The visitor searches or scrolls the list, then taps the call icon next to the person they want to reach. The call initiates through the Alarm.com video doorbell at that entrance, providing live video and two-way audio. If the call is not answered, the recipient receives a missed call push notification. Optionally, the system can require the visitor to press the physical doorbell button as proof of presence before the call connects. Visitors will need cellular data or Wi-Fi to load the directory page after scanning, so installing QR signage in a location with good cellular reception makes for the smoothest experience.
The Employee or Tenant Response
When a visitor initiates a call, the recipient receives a push notification on the Alarm.com app showing a live video preview from the doorbell camera. The recipient can accept the call for two-way audio, buzz open the linked access control door directly from the call screen, or decline. Each recipient can have multiple devices set to receive notifications—a phone, tablet, and even a compatible Qolsys panel can all ring simultaneously. The intercom card on the app dashboard also allows employees to buzz open the door on demand without an active call, useful for expected deliveries.
Account Structure and Linking
VIMD uses a manager-and-user account structure. The main property manager account is where all hardware is enrolled. This account creates and manages directories, QR codes, and device associations. Each employee or tenant who receives intercom calls needs their own Alarm.com account with the Video Intercom User add-on, linked to the manager account so they appear as directory recipients. Recipients do not appear in the directory until they enroll at least one mobile device in the app. Each account supports up to 200 mobile device recipients, expandable by linking additional accounts.
Key Features
Customization and Branding
The directory web page visitors see can be fully branded. You can upload a custom logo (JPEG or PNG, up to 3 MB), write a personalized welcome header, and add help text guiding visitors through the process. The display type can show either recipient names or unit numbers depending on your privacy needs. Multiple QR codes can be created independently and assigned to different video devices, so a building with a front entrance and a loading dock can have separate directories or share one.
Integration with Existing Hardware
VIMD works with Alarm.com wired doorbell cameras—specifically the ADC-VDB775, ADC-VDB755P, ADC-VDB770, and ADC-VDB750. For access control, it supports Alarm.com access control readers as well as compatible third-party readers. At least one video doorbell and one access control reader must be installed and enrolled on the manager account to complete the intercom setup. Because VIMD leverages hardware you may already have deployed for security, the incremental cost of adding intercom functionality is limited to the service add-ons—there is no new hardware to purchase if you already have a compatible doorbell and reader in place.
Security and Activity Logging
Each directory web page is generated with a unique 32-character hash, making the URL effectively unguessable. The system includes spam detection and can disable a directory if abused, generating a new hash and QR code. All intercom calls, door unlocks, and missed calls are logged in the Alarm.com activity feed, providing a full audit trail. Button press events can also be configured to send push, SMS, or email notifications independently of the directory. The QR code only needs to be replaced if someone deletes it from the account—if you swap out a video device, the existing QR code transfers to the new device without reprinting signage.
Setting Up VIMD for Your Business
First, install and enroll your compatible Alarm.com video doorbell and access control reader on the main property manager account, and ensure the Video, Access Control, and Video Intercom Management add-ons are enabled. If you have separate tenant or employee accounts, each needs the Video Intercom User add-on and must be linked to the manager account.
From the Alarm.com website, navigate to Video, then Intercom, and click Start. The guided wizard walks through generating a QR code, customizing the directory web page (logo, header, help text), selecting the video device and associated access control doors, choosing a display type (recipient name or unit number), and optionally enabling visitor confirmation. After the directory is created and recipients are added, the system generates a downloadable QR code. Print it and post it at the entrance.
For QR code signage, Alarm.com recommends weatherproof, UV-resistant materials (acrylic, aluminum, or laminated plastic). Print the QR code at minimum 2 x 2 cm in high contrast (black on white), and mount it at chest-to-eye level (48–63 inches high) within 6–12 inches of the doorbell on a flat, well-lit surface. Working with a local sign maker to produce a professional etched or printed sign with your property's branding is a worthwhile investment.
Best Practices and Troubleshooting
Placement and connectivity matter. Install video doorbells in locations with strong cellular reception, since visitors will need cellular data to interact with the directory after scanning the QR code. If your entrance is in a cellular dead zone, consider providing guest Wi-Fi access near the entry point.
Use visitor confirmation for security. Enabling the doorbell button press requirement ensures that the person initiating the call is physically present at the door, preventing remote abuse of the QR code link.
Keep directory listings current. When employees leave or new staff join, update the directory promptly. Recipients who have not enrolled a mobile device will not appear in the directory, so remind new team members to complete the Alarm.com app enrollment process—they will receive an email invitation with instructions.
Multi-entrance setups need separate QR codes. Each entrance with its own video device requires an independently created QR code. You can use the same directory across entrances or create separate directories for different parts of the building.
Intercom card visibility. The Intercom card in the Alarm.com app is only visible when logged in with the tenant account's own credentials. It is not accessible through a Linked Login, so recipients should use their direct login for full intercom functionality.
Why VIMD Fits SMB Security Strategies
Traditional intercom systems for commercial buildings can cost thousands in hardware, wiring, and installation—and they are often single-purpose devices that do not integrate with the rest of your security infrastructure. VIMD eliminates that cost for businesses that already have Alarm.com video doorbells and access control. The only incremental expense is the service add-ons, making it one of the most cost-effective ways to add intercom capability to a commercial space.
Because VIMD runs on the same Alarm.com platform as your intrusion detection, video surveillance, and access control, all visitor interactions are captured in the same activity log and can participate in the same automation rules and schedules. A business with multiple locations can manage all intercoms from a single dashboard. As your business grows—adding doors, locations, or staff—VIMD scales with it. New recipients are added through the app, new entrances get their own QR codes, and no additional wiring is needed.
To learn more about self-managed Alarm.com for Business security with full owner control, visit Surety Business. For setup questions and configuration help, ask Surety Support.