Comelit EX-BSB Expansion Doorbell Module
The Comelit EX-BSB is a modular expansion doorbell designed to add entry points to existing Comelit video intercom installations. It operates on PoE+ (802.3at) power, eliminating the need for dedicated 12VDC infrastructure and simplifying multi-unit building deployments where additional call stations or entry monitoring is required.
Key Features
- 2MP Resolution (1920 x 1080): Provides sufficient detail for visitor identification and facial recognition at entry doors. At this resolution, storage requirements remain moderate — a key factor in multi-unit residential or small commercial settings where bandwidth and NVR capacity are shared across multiple entry points.
- PoE+ Power (802.3at): Draws power directly from your network infrastructure without separate low-voltage wiring. Simplifies installation in retrofit scenarios and avoids the cost of dedicated power supplies. PoE+ headroom also allows for future module expansion without power budget concerns.
- Integrated Microphone & Two-Way Audio: Enables real-time conversation with visitors at the door, supporting remote unlock requests and delivery instructions. Essential for intercom use cases where video alone is insufficient.
- Modular Design: The EX-BSB integrates seamlessly into Comelit intercom ecosystems, allowing you to scale from a single entry point to multiple stations without replacing core equipment. Particularly valuable in multi-unit residential or commercial properties where entry points expand over time.
- Compact Form Factor: Suited for wall mounting at entry doors, vestibules, or gates where space is constrained. Does not require a large enclosure or external power conduit.
Integration & Compatibility
The EX-BSB is designed as an expansion module for Comelit video intercom systems and integrates with Comelit platform architecture. It is appropriate for residential multi-unit buildings (apartments, condos), small commercial properties, and access control scenarios where modular expansion is needed. Network deployment assumes a functioning PoE+ network switch with available power budget — verify your switch specifications before deployment.
What's in the Box
- Comelit EX-BSB expansion doorbell module
- 1405 included component
Frequently Asked Questions
Q: Does the EX-BSB require a separate power supply?
A: No. The EX-BSB draws power via PoE+ (802.3at) from your network switch. No 12VDC transformer or separate power conduit is needed.
Q: Can I use the EX-BSB with non-Comelit systems?
A: The EX-BSB is designed for integration with Comelit intercom platforms. Compatibility with third-party systems is not supported and should be verified with your system integrator before purchase.
Q: What is the maximum number of EX-BSB modules I can add to a single system?
A: This depends on your Comelit system's platform limits and available PoE+ power budget. Consult your system documentation or integrator for maximum expansion limits.
Q: Does the EX-BSB support ONVIF or other open standards?
A: The EX-BSB is a proprietary Comelit module. Integration follows Comelit's intercom architecture, not open IP standards like ONVIF.
Q: What is the warranty on the EX-BSB?
A: Warranty terms are determined by Comelit and your specialty retailer. Contact your integration partner for warranty specifics at time of purchase.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Comelit EX-BSB is a straightforward expansion module for Comelit intercom ecosystems. If you're building out a multi-unit property or adding entry points to an existing Comelit deployment, this module eliminates the infrastructure headache — PoE+ power means no dedicated low-voltage runs, and 2MP resolution is adequate for entry-level visitor identification in residential and light commercial settings.
Technical Highlights:
- PoE+ (802.3at) Power: Draws power directly from your network switch with no separate transformer. This is a real time-saver on retrofit jobs and keeps your power budget lean if you're expanding beyond two or three units.
- 2MP Resolution: Sufficient for facial recognition and visitor identification at typical entry distances. Not meant for long-range perimeter coverage — this is a doorbell, not a wide-area surveillance module.
- Integrated Two-Way Audio: Microphone built in; no separate audio interface needed. Supports real-time conversation with visitors and remote unlock workflows.
Deployment Considerations:
- PoE+ Switch Required: Verify your network infrastructure supports 802.3at power delivery before ordering. Older switches may not have enough power budget for multiple EX-BSB units.
- Comelit-Only Ecosystem: This is a closed module. It does not export ONVIF video or integrate with third-party VMS platforms. If you need interoperability with Milestone, Axis Camera Station, or other open-standard systems, this is not the right choice.
- Modular Expansion Scaling: The EX-BSB shines when you need to add entry points incrementally. Each module is self-contained and does not require new cabling runs — a real advantage in multi-story residential buildings.
Best suited for Comelit-committed multi-unit residential properties, small commercial buildings with modular expansion plans, or existing Comelit installations where you need to add a secondary or tertiary entry point without infrastructure rework. Not for open-standard environments or surveillance-first deployments requiring third-party VMS integration.
