Altronix T3M77LCK1D 16-Output Access Power Controller with Battery Backup
Overview
The Altronix T3M77LCK1D is a large-format, UL294-listed access power controller designed for multi-door commercial deployments where a single, centralized power distribution point is required. Running on 115VAC/60Hz and delivering selectable 12VDC or 24VDC across 16 independently controlled outputs — eight via power distribution and eight via access power controller outputs — this unit is built for integrators wiring credential readers, electric locks, and access control panels in facilities with 8 or more controlled openings. At 85.6 lb. and 36.12" x 30.125" x 7.06" of enclosure, the T3M77LCK1D is a wall-mounted cabinet solution, not a rack appliance. Plan your install space accordingly.
Key Features
- Dual-voltage selectable outputs (12VDC / 24VDC): Each of the 16 outputs can be independently set to 12 or 24VDC, which means a single enclosure can simultaneously power 12V mag locks alongside 24V card readers without separate power supplies — a real consolidation advantage on multi-door retrofits.
- 10A continuous @ 24VDC output capacity: The sustained 10-amp output budget at 24VDC supports high-draw strike-heavy or multi-lock zones without thermal throttling. Pair this against your lock spec sheets before specifying — fail-safe magnetic locks in particular can spike during release cycles.
- Battery backup — 12VDC/12AH: Integrated 12AH battery capacity keeps controlled doors operational during AC outages. For UL294 access control compliance in life-safety paths, backup power isn't optional — it's a code requirement, and this unit satisfies it without a separate battery module.
- 8.4A max input draw @ 115VAC: A single 15A branch circuit handles this unit with headroom. No dedicated 20A circuit or sub-panel coordination required in most jurisdictions — simplifies the electrical rough-in conversation.
- Form C relays rated 28VAC/VDC @ 2.5A: The onboard Form C relays support alarm and status signaling back to the access control panel — useful for tamper, AC fail, or battery low monitoring loops already standard in most panel architectures.
- UL294, cUL s319-05, CE agency listings: UL294 is the access control equipment standard that AHJs and security consultants specify by name. This listing means the T3M77LCK1D qualifies for permitted installations without variance requests in the majority of North American jurisdictions.
- Operating range 0°C to 49°C: Covers standard indoor mechanical room and IDF closet environments. Not rated for unheated exterior enclosures — if your install goes into a cold vestibule or unheated utility room in a northern climate, verify the ambient stays above freezing.
- 289 BTU/Hr. heat output: At nearly 85W of heat dissipation, plan for ventilation in tight enclosure rooms. In a sealed mechanical closet with no air exchange, that heat load matters for long-term battery health.
Integration & Compatibility
The T3M77LCK1D integrates into virtually any access control ecosystem — it is a power and distribution device, not a proprietary controller, so it pairs with panels from Lenel, Software House, Genetec, HID, and others without protocol concerns. The 16 selectable-voltage outputs align with typical 8-door panel architectures where each door requires both a lock output and a reader supply. Explore the full Altronix power solutions catalog for companion modules, and review our access control category for compatible panels and readers. If you're planning a PoE-based access deployment, our PoE switch selection covers the network-side power distribution. For storage and retention planning on integrated video-access systems, the NVR category covers recorder pairing.
Frequently Asked Questions
Q: What is the battery backup capacity on the T3M77LCK1D?
A: The T3M77LCK1D includes a 12VDC/12AH battery — sufficient for standard UL294 backup requirements on most access control deployments. Actual runtime depends on connected load.
Q: Can the T3M77LCK1D outputs be set to different voltages independently?
A: Yes. All 16 outputs (8 power distribution + 8 access power controller) are individually selectable between 12VDC and 24VDC, so you can mix lock and reader voltages within a single enclosure.
Q: Is the T3M77LCK1D UL listed for access control applications?
A: Yes. The unit carries UL294 and cUL s319-05 listings, which are the primary access control power equipment standards recognized by AHJs across North America.
Q: What circuit does the T3M77LCK1D require?
A: It draws a maximum of 8.4A at 115VAC/60Hz, so a standard 15A branch circuit provides adequate headroom in most installations.
Q: How large is this enclosure and what does it weigh?
A: The enclosure measures 36.12" x 30.125" x 7.06" and weighs 85.6 lb. — this is a substantial wall-mounted cabinet, not a compact module. Factor this into wall-mounting structural planning.
The T3M77LCK1D is the unit I reach for on 6-to-8 door commercial installs where the integrator wants a single power cabinet instead of distributed supplies at every door. The 16 selectable-voltage outputs — 8 power distribution plus 8 access controller — cover a full 8-door deployment with reader and lock power from one enclosure, and the 10A continuous @ 24VDC output means you have real headroom for high-draw hardware, not just spec-sheet headroom.
Technical Highlights:
- 12AH battery backup: Satisfies UL294 backup power requirements without adding a separate battery module — the battery is integrated, which matters when the AHJ walks the install.
- 16 independently selectable 12/24VDC outputs: Mixing 12V mag locks with 24V readers on the same riser is common in retrofit work; doing it from one supply rather than two eliminates a failure point and simplifies the homerun wiring.
- Form C relays @ 28VAC/VDC, 2.5A: These feed tamper and power-fail signals directly into the access panel's supervised input loops — no external relay modules needed for standard monitoring loops.
Deployment Considerations:
- At 85.6 lb. and 36" tall, this cabinet needs a properly blocked wall section and two-person lift — plan the rough-in accordingly, and verify the mechanical room door width before delivery.
- The 289 BTU/Hr. heat output in a sealed IDF closet can degrade battery longevity over time; confirm the room has at least passive airflow or budget for a small exhaust fan if the closet runs warm in summer.
This unit is the right call for a school, mid-size office campus, or government facility where a single controlled wiring point for an 8-door access system is the goal and UL294 listing is non-negotiable on the permit drawings.
