Alpha 4851-SXT Main Control Unit with Extended Battery Backup, Supports up to Master Stations and 512 Remote Stations

Keep your facility communications and security systems online and responsive with the Alpha Communications 4851-SXT Main Control Unit — a purpose-built intercom master station solution for demanding commercial and institutional deployments. Designed for continuous operation, the unit includes an extended battery backup that preserves voice, paging, and monitoring capabilities during power interruptions. The 4851-SXT supports up to 512 remote stations, giving you room to expand across multi‑building campuses, residential complexes, or corporate environments without replacing core infrastructure. As Alpha Communications' Main Control Unit (MPN 4851-SXT) and manufactured in the US, it delivers industrial-grade reliability and simplified system management for IT and facilities teams. Easy integration with access control, surveillance, and building monitoring systems ensures coordinated incident response and centralized oversight of site communications. Ideal for installers, property managers, and security integrators who require scalable, resilient intercom networks — contact your Alpha Communications dealer to specify the 4851-SXT for your next security, surveillance, or communications project.

• Reliable, uninterrupted intercom operation with extended battery backup to keep communications live during power events
• Scalable platform supporting up to 512 remote stations to simplify growth across campuses, multi‑tenant buildings, and large facilities
• Centralized master control for streamlined monitoring and secure site communications, reducing maintenance time and response delays
• Built to commercial standards (MPN 4851-SXT) and made in the US for consistent quality and dependability
• Integrates with security and access control systems to enhance surveillance, monitoring, and emergency response workflows