Comelit EX-BSB Bello Serie Expansion Doorbell Panel with Switching Device Kit, SB2, IP54

Protect entrances and simplify system expansion with the Comelit EX-BSB Bello Serie Expansion Doorbell Panel with Switching Device Kit. Purpose-built for installers, property managers and security integrators, this Comelit expansion kit adds reliable outdoor video and call capability to existing 2‑Wire intercom systems without the need for heavy rewiring. The wide 108° colour camera and built-in white LEDs provide clear surveillance and monitoring in low light, while the IP54-rated, UV- and salt-mist-tested front panel ensures dependable operation in harsh outdoor environments.

Installation is straightforward: the included audio/video switching module and bus-powered design let you tie the unit into Comelit HFX series systems (HFX-700B, HFX-700W, HFX-9500M) quickly, cutting labor and downtime. Adjustable speaker and microphone levels allow optimised two-way communication for visitor verification and access control. The mechanical call button is tested for over 120,000 activations to handle high-traffic use.

Ideal for residential, multi-dwelling and light commercial security upgrades, the EX-BSB enhances perimeter surveillance and monitoring without a full system overhaul. Add this expansion panel to your next project to extend coverage and improve visitor management.

• Seamlessly expand a Comelit 2‑Wire intercom to add outdoor video and call functionality with minimal rewiring
• Clear surveillance day or night with a 108° wide-angle colour camera and white LEDs for low-light monitoring
• Built to withstand outdoor conditions: IP54-rated front panel with UV and salt-mist resistance for reliable outdoor performance
• Durable mechanical call button rated for 120,000+ activations—ideal for multi-tenant and commercial access control
• Integrated audio/video switching module for fast connection to HFX-700B/HFX-700W/HFX-9500M, reducing installation time