Altronix T1MKT4DSNY Mercury 4-Door PoE Power and PTC Module for Sony

Overview

The Altronix T1MKT4DSNY is a four-door Power over Ethernet (PoE) power and PTC (Polymeric Positive Temperature Coefficient) distribution module engineered specifically for Mercury-based Altronix access control deployments running Sony-compatible hardware. If you're commissioning a mid-size commercial access control system and need a clean, code-compliant way to deliver regulated power to four doors simultaneously — without running separate power drops to each panel — this module addresses that directly.

The T1MKT4DSNY sits in the power distribution layer of a Mercury/Sony access control architecture, drawing power via PoE from an upstream switch or injector and distributing it to four door positions. That consolidation matters on retrofit jobs and new builds alike: instead of four discrete power supplies with four sets of compliance and maintenance concerns, you have a single module to wire, monitor, and service.

Key Features

• 4-Door PoE Power Distribution: Delivers regulated power to four independent door positions from a single PoE input. On a typical office floor, that means one cable run from the IDF to the module, and four short home-runs to each reader/lock position — far cleaner than pulling four separate power circuits.
• PTC (Polymeric Positive Temperature Coefficient) Overcurrent Protection: Each output is protected by a self-resetting PTC device rather than a traditional fuse. When an output sees a fault current, the PTC trips and resets automatically once the fault clears — no blown fuses to replace during a late-night service call.
• Short-Circuit Protection: Built-in short-circuit protection on each door output prevents a wiring fault at one door from collapsing power to adjacent doors. This fault-isolation behavior is critical in retrofit environments where legacy wiring may be marginal.
• Real-Time Monitoring: The T1MKT4DSNY includes real-time monitoring capabilities so the Mercury panel or management software can detect power anomalies at the module level — not just at the door — giving operators an earlier warning signal before a door goes offline.
• Sony Device Compatibility: Designed and validated for Sony-compatible hardware within the Mercury ecosystem. If your deployment specifies Sony access control hardware on a Mercury platform, this module is the purpose-built power interface — not a generic PoE injector pressed into service.
• Consolidated Infrastructure Footprint: A single T1MKT4DSNY handles four doors from one PoE source. For multi-tenant commercial buildings where access control panel count directly impacts enclosure space and conduit fill, that consolidation reduces both installation labor and long-term maintenance overhead.

Integration and Compatibility

The T1MKT4DSNY is purpose-built for Mercury-platform access control systems paired with Sony devices. Pairing this module with a compatible PoE switch upstream is the standard deployment pattern — ensure your switch port delivers adequate wattage for the module's full four-door load before commissioning. Verify compatibility with your specific Mercury controller revision and Sony hardware configuration with your integrator or Altronix pre-sales engineering prior to ordering, as Mercury/Sony platform combinations may have firmware or hardware revision dependencies not captured in generic compatibility claims.

For larger deployments requiring more than four doors, multiple T1MKT4DSNY modules can typically be deployed in parallel, each fed from dedicated PoE switch ports, to scale coverage without introducing a centralized power supply bottleneck. Consult your access control power planning documentation to confirm per-port wattage budgets before scaling.

Frequently Asked Questions

Q: What access control platform is the T1MKT4DSNY designed for?

A: The T1MKT4DSNY is purpose-built for Mercury-based access control deployments using Sony-compatible hardware. It is not a generic PoE power module and should be specified only for Mercury/Sony platform configurations.

Q: How does PTC protection differ from a standard fuse on each door output?

A: A PTC device is self-resetting — when a fault clears, the output automatically restores power without requiring a technician to replace a blown fuse. This reduces after-hours service calls caused by wiring faults or momentary overloads.

Q: Does a short circuit on one door output affect the other three doors?

A: The T1MKT4DSNY includes per-output short-circuit protection designed to isolate a faulted door from the remaining outputs, so a wiring fault at door 2 should not pull down doors 1, 3, or 4.

Q: What PoE standard does the T1MKT4DSNY require from the upstream switch?

A: The source evidence does not specify the exact PoE standard (802.3af vs. 802.3at) required. Confirm the module's input power requirements with Altronix or your distributor before selecting the upstream switch or injector.

Q: Can the T1MKT4DSNY be monitored by the Mercury access control panel?

A: Yes — the module includes real-time monitoring capabilities that integrate with the Mercury panel to surface power status and fault conditions, allowing operators to detect issues before a door goes offline.

Ted Perry

The Altronix T1MKT4DSNY is one of those modules that earns its place on a BOM not through flashy specs but through what it eliminates: four separate power supply enclosures, four sets of fuses to stock, and the labor to run four independent power drops. I spec this into Mercury/Sony deployments where conduit fill and panel real estate are constrained — which is most of them past a certain floor count.

Technical Highlights:

• Per-Output PTC Protection: Self-resetting polymer PTC devices on each of the four door outputs mean no fuse stock to maintain and no after-hours roll to restore a door that tripped on a wiring spike.
• Short-Circuit Isolation: Each output's short-circuit protection is independent — a fault at one door position stays contained, keeping the other three doors powered and functional rather than cascading a failure across the module.
• Real-Time Power Monitoring: The module's monitoring integration surfaces power status at the panel level, which is the difference between proactive fault detection and finding out a door is offline when a badge holder calls the help desk at 6 AM.

Deployment Considerations:

• Verify upstream PoE port wattage against the module's full four-door load before commissioning — a switch port that's shared with other devices on the same budget may not deliver adequate sustained power under all four doors active simultaneously.
• This module is specifically validated for Mercury/Sony platform combinations; do not substitute it into non-Sony Mercury deployments or expect generic PoE compatibility — the platform specificity is the design constraint, not a marketing distinction.

Best fit: mid-size commercial office or campus buildings running Mercury controllers with Sony hardware, where the goal is clean power distribution across four-door clusters without adding enclosure space or service complexity to each floor's IDF closet.