Comelit 1252 Simplebus1-2 Users Expansion Interface

Optimize multi-point communication and on-site response with the Comelit 1252 Simplebus expansion interface—an intercom accessory built for scalable security and monitoring environments. This Comelit 1252 module lets you link up to 16 monitors or telephones to the same address so staff or security personnel receive simultaneous ringing, reducing missed calls and speeding incident response. Housed in a compact 6 DIN modular format, it simplifies panel mounting and keeps wiring tidy for commercial installations, residential complexes, and surveillance integration. Designed for Simplebus 2-wire systems, the unit operates from a 120–230 Vac supply and intentionally does not provide monitor power, allowing you to centralize power via external supplies or UPS for improved resilience. Ideal for security, access control, and building monitoring projects, the 1252 streamlines expansion without overhauling existing infrastructure. Upgrade your intercom and surveillance setup with a reliable, industry-compatible expansion interface—contact your distributor or order the Comelit 1252 today to scale communication across your site.

• Scale communication across sites: connect up to 16 monitors or telephones to the same address so multiple stations ring simultaneously
• Space-saving 6 DIN modular design for clean, panel-mounted installations and easier wiring management
• Designed for Simplebus 2-wire systems to integrate seamlessly with existing Comelit intercom networks
• 120–230 Vac compatibility for flexible deployment with standard building power supplies
• External power architecture: unit does not supply monitor power, enabling centralized or UPS-backed power strategies for critical security setups