Mircom TX3-8EC TX3 Series NSL 8-Relay Expander Cabinet

Optimize and scale building security and monitoring with the Mircom TX3-8EC TX3 Series NSL 8-Relay Expander Cabinet. Designed to expand a TX3-NSL-8M master cabinet, this relay expander delivers immediate, high-density relay capacity—adding eight telephone-line relay card slots per cabinet and allowing up to 16 backplanes for a total system capacity of 1,536 residents. That means fewer cabinets, simpler wiring and faster deployments for multi-dwelling units, campuses, healthcare facilities and other large security or surveillance installations.

Engineered for professional AV and security integrators, the TX3-8EC connects via two cables to the master unit to ensure reliable communication and straightforward field servicing. Its compact footprint (10.13" W x 6.38" D x 13.94" H) conserves rack and closet space while supporting scalable monitoring and access-control architectures. Use the TX3-8EC to extend telephone line relay coverage, centralize alarm outputs or expand intercom and access control relay capacity.

For scalable, dependable relay expansion in security and surveillance systems, specify the Mircom TX3-8EC—contact your Mircom distributor or systems integrator to configure a solution for your site.

• Rapid capacity expansion: adds 8 relay slots to scale TX3 systems for larger residential or commercial deployments
• Seamless TX3 integration: connects to the TX3-NSL-8M master with two-cable interconnect for simplified installation and reliable communications
• Built for large systems: supports chaining up to 16 backplanes for a combined capacity of up to 1,536 residents, ideal for MDUs and campuses
• Reduces wiring complexity: centralized relay expansion streamlines surveillance, security and monitoring wiring and maintenance
• Compact, installation-friendly form factor: 10.13" W x 6.38" D x 13.94" H saves rack/closet space while delivering high-density relay capacity