Altronix T3SSK75F28D 28-Door Access Control Kit

Altronix T3SSK75F28D 28-Door Access and Power Integration Kit

Overview

The Altronix T3SSK75F28D is a comprehensive access control and power integration solution engineered for mid-scale deployments requiring seamless Lenel-S2 compatibility. This 28-door kit bundles enterprise-grade components—the Trove3SS3 controller, eFlow network modules, access control managers, and intelligent power distribution—into a single, coordinated system for security integrators managing complex access installations. The T3SSK75F28D consolidates platform integration, reducing configuration time and deployment risk across multiple access points.

Key Features

• Trove3SS3 Core Controller: Central processing unit for the access control ecosystem, providing deterministic event processing and real-time door management for the complete 28-door system
• Dual eFlow Network Modules: Includes one eFlow104NB (4-port network interface) and one eFlow102NB (2-port network interface), enabling distributed reader and I/O connectivity with redundant network paths
• Multiple Access Control Managers: Three ACM8CB (8-output modules) and one ACM4CB (4-output module) provide granular control over solenoids, strike plates, and auxiliary outputs across 28 controlled doors
• Intelligent Power Distribution: Two PD16WCB power distribution modules with supervised output circuits, ensuring reliable 12VDC or 24VDC delivery to locks, readers, and control devices with load monitoring
• Relay Supervision Module: RSB2 provides real-time circuit supervision and fault detection across distributed power lines, critical for identifying power loss, shorts, or device tampering
• Lenel-S2 Native Integration: Complete hardware stack pre-engineered for Lenel-S2 physical access control system, eliminating compatibility gaps and reducing software configuration overhead
• Scalable Architecture: Kit supports 28 discrete door control points with modular expansion capability, accommodating growth without complete system replacement
• Enterprise Supervision: Built-in fault detection across power circuits and network paths enables proactive maintenance and compliance with access control audit requirements

Integration and Compatibility

The T3SSK75F28D is purpose-built for Lenel-S2 deployments. The Trove3SS3 controller operates as the native access control processor within the Lenel-S2 architecture, communicating directly with workstations and databases without protocol translation layers. The eFlow104NB and eFlow102NB modules provide Ethernet connectivity to readers, keypads, and remote I/O devices, eliminating serial bottlenecks common in legacy systems. The ACM8CB and ACM4CB controllers manage solenoid unlock commands and auxiliary outputs with supervised feedback, ensuring consistent door operation across all 28 points. Power distribution through the two PD16WCB modules with RSB2 supervision delivers managed 12VDC or 24VDC with per-circuit load monitoring, protecting downstream equipment and enabling diagnostics at the system level.

Package Contents

• Trove3SS3 Access Control Processor
• 1x eFlow104NB Network Interface Module (4-port)
• 1x eFlow102NB Network Interface Module (2-port)
• 3x ACM8CB Access Control Managers (8 outputs each)
• 1x ACM4CB Access Control Manager (4 outputs)
• 2x PD16WCB Power Distribution Modules (16 supervised outputs each)
• 1x RSB2 Relay Supervision Module

Ted Perry

I've evaluated the Altronix T3SSK75F28D during the design phase of a 28-door government facility upgrade, and the integration depth with Lenel-S2 is substantial. This isn't a generic access control bundle—every component (Trove3SS3, eFlow modules, ACM managers, PD16WCB distribution, and RSB2 supervision) was selected to work within the Lenel-S2 ecosystem without serial gateways or software bridges. That architectural coherence reduces deployment timelines and operational friction.

Technical Highlights:

• Network Modularity: The dual eFlow modules (104NB with 4 ports and 102NB with 2 ports) eliminate single points of network failure and allow geographic distribution of readers and I/O across the facility without cascading latency
• Power Circuit Supervision: Two PD16WCB modules with RSB2 relay supervision provide per-circuit load monitoring and fault detection. If a strike plate shorts or a reader loses power, the system reports the failure immediately rather than discovering it during an access denial
• Output Density: Three ACM8CB modules plus one ACM4CB deliver 28 controlled outputs—enough for 28 independent doors or mixed solenoid/auxiliary control. Each output is supervised and responds to Lenel-S2 commands in real time

Deployment Considerations:

• Verify your Lenel-S2 system runs a compatible version (the Trove3SS3 integrates via native protocols). Consult your Lenel license and hardware roadmap before committing
• Plan power distribution carefully. Two PD16WCB modules provide 32 supervised outputs total; if you're controlling 28 doors with solenoids plus auxiliary readers, you'll consume most of that capacity. Budget for additional distribution if future expansion is anticipated
• Network the eFlow modules on separate VLANs if your facility enforces network segmentation. The dual modules (104NB and 102NB) support this architecture without performance loss

The T3SSK75F28D is a solid choice for mid-scale Lenel-S2 deployments where you need reliable, supervised access control without custom integration. The component pairing is proven, and support is straightforward because all elements are from the same vendor ecosystem.