Altronix T1LMK3F4ND 4-Door Access and Power Integration Wall Mount Kit

Overview

The Altronix T1LMK3F4ND is a wall-mount integration kit purpose-built for deployments that pair Altronix power distribution with LiftMaster access control hardware across up to four doors. At its core, it delivers 24VDC at 6A — enough headroom to drive a mixed load of electric strikes, magnetic locks, or door controllers simultaneously without straining individual circuits. If you're wiring a small commercial building, a lobby-plus-three-suite layout, or a multi-door interior zone where you need one clean power source and per-output overcurrent protection, the T1LMK3F4ND packages that capability in a single mountable assembly.

PTC (Positive Temperature Coefficient) overcurrent protection on the outputs is the detail that separates this from a bare power supply. PTC devices self-reset after a fault clears — unlike fuses, which require manual replacement. In a 4-door installation, that means a shorted lock or wiring fault on one circuit won't take a technician back to the panel with a fuse kit; the affected output recovers automatically once the fault is resolved, and the remaining doors stay live.

Key Features

• 24VDC at 6A Output: Six amps at 24 volts gives you a combined 144W of capacity across the four-door distribution. That's enough to run multiple mag-locks (typically 500mA–1A each at 24V) or electric strikes concurrently without hitting the supply ceiling — relevant when all four doors see simultaneous access events during a shift change or emergency egress test.
• 4-Door Support: Distributes power to four independent door circuits from one assembly. Keeping each door on its own branch simplifies fault isolation — when you get a trouble condition, you know which door circuit to trace rather than chasing a shared rail.
• PTC Overcurrent Protection: Self-resetting thermal protection on each output means a wiring fault or lock short trips the circuit automatically and recovers once the fault clears. No blown fuses, no return visit just to restore power after a wiring error during commissioning.
• Altronix / LiftMaster Integration: Designed specifically for combined Altronix power and LiftMaster access control deployments. Pre-matched hardware eliminates compatibility guesswork when specifying a system that combines both brands — the physical integration points, voltage rails, and control interfaces are engineered to work together out of the box.
• Wall Mount Form Factor: Installs directly on a wall surface, keeping the assembly close to the door cluster it serves. Shorter home-run wiring runs mean less voltage drop across the cable, which matters when you're already at the edge of a lock's input voltage tolerance at 24V.

Integration & Compatibility

The T1LMK3F4ND is built around the Altronix and LiftMaster ecosystem. It is the correct choice when your access control head-end is LiftMaster-based and your power distribution is Altronix — the kit is explicitly designed to integrate those two product lines in a single enclosure. Installers working with third-party access control panels should verify compatibility independently, as the integration points are Altronix/LiftMaster-specific. For broader access control power solutions, review the full Altronix product line to match the right power kit to your panel and door count. If you're planning a larger deployment beyond four doors, consider stepping up to a higher-channel Altronix integration kit in the same family. For PoE-based door controllers, a PoE switch may be a more appropriate power path than a dedicated 24VDC supply. Pair this kit with compatible electric locks or strikes rated for 24VDC input to stay within the 6A supply budget.

Frequently Asked Questions

Q: How many doors can the T1LMK3F4ND support?

A: The T1LMK3F4ND supports up to 4 doors, with power distributed from a single 24VDC at 6A supply across four independent output circuits.

Q: What type of overcurrent protection does the T1LMK3F4ND use?

A: It uses PTC (Positive Temperature Coefficient) overcurrent protection. PTC devices are self-resetting — after a fault clears, the circuit recovers automatically without requiring fuse replacement.

Q: What output voltage and current does the T1LMK3F4ND provide?

A: The kit provides 24VDC at 6A total output capacity across the four door circuits.

Q: Is the T1LMK3F4ND designed for a specific access control brand?

A: Yes. The T1LMK3F4ND is purpose-built for Altronix and LiftMaster access control and power integration. It is the correct choice when combining both brands in a single installation.

Q: How is the T1LMK3F4ND installed?

A: It is a wall mount kit, designed to be surface-mounted on a wall near the door cluster it serves.

Ted Perry

The T1LMK3F4ND is one of those Altronix kits that makes the most sense when you're already committed to LiftMaster on the access control side and need a clean, pre-matched power solution to go with it. The 24VDC at 6A output is the right spec for a 4-door zone — you have enough headroom to run four mag-locks at typical draw without riding the supply ceiling, and the Altronix/LiftMaster co-engineering means you're not improvising the interface between power and control.

Technical Highlights:

• 6A at 24VDC: With most 24V mag-locks drawing 500mA to 1A, you have comfortable margin to run all four doors simultaneously — important during egress events or power-on sequencing where all circuits activate at once.
• PTC Overcurrent Protection: Self-resetting protection per output means a commissioning short or field wiring fault trips and recovers automatically. In a 4-door deployment, that prevents one bad circuit from requiring a truck roll just to swap a fuse.
• Wall Mount Design: Installing close to the door cluster reduces home-run cable length, which directly reduces resistive voltage drop on the 24V rail — a practical concern when your locks have a narrow input voltage tolerance.

Deployment Considerations:

• This kit is Altronix/LiftMaster ecosystem-specific. If your access control head-end is from a different manufacturer, verify integration compatibility before specifying — the kit is not a generic 4-door power supply.
• Total output is 6A shared across all four circuits. Budget your per-door draw carefully if you're mixing lock types (mag-lock + strike + REX device on the same branch) to avoid nuisance PTC trips under combined load.

The T1LMK3F4ND is well-suited for light commercial builds — professional offices, medical suites, or small retail spaces — where you're running a LiftMaster-based system and want integrated Altronix power distribution in one wall-mounted assembly rather than piecing together separate components.