Altronix T1M1LCK3D 12/24VDC Dual-Battery Access Control Power Supply
Overview
The Altronix T1M1LCK3D is a UL294-listed, cUL s319-05-listed power supply and battery charger designed for commercial access control and security system installations. It accepts 115VAC/60Hz mains input and delivers selectable 12VDC or 24VDC output — giving the installing integrator flexibility to match the field device voltage without stocking two separate supplies. The enclosure houses two 7AH/12VDC sealed lead acid or gel batteries, providing local backup power so a mains outage doesn't drop a door or alarm zone. Supervision outputs for AC fail, battery fail, and battery presence make the T1M1LCK3D compatible with panel-reporting requirements at sites where compliance and audit trails matter.
Explore the full Altronix power and access control line for companion products across this platform, or browse our access control systems category for panels, readers, and controllers the T1M1LCK3D is built to support.
Key Features
- Selectable 12VDC or 24VDC Output: A single unit powers either voltage — 4A continuous at 12VDC for readers and locks, or 3A continuous at 24VDC for higher-voltage electrified hardware. No separate SKU required for mixed-voltage jobs.
- Dual 7AH Battery Backup (14AH Total): Two sealed lead acid or gel cells fit inside the enclosure. At a 500mA average draw, that translates to roughly 14+ hours of backup — meeting most UL294 standby requirements without an external battery cabinet.
- UL294 and cUL s319-05 Listed: These listings matter on any access control bid requiring UL-compliant power. CE marking adds coverage for international or campus deployments with global compliance requirements.
- Full Supervision Outputs: AC fail, battery fail, and battery presence are all supervised outputs. Wire these to your access panel or monitoring board and you have real-time visibility into power health — no manual battery checks required on routine service visits.
- 3.5A Max Input Current at 115VAC: The draw is modest enough for most standard 15A branch circuits, even when the charger is actively conditioning both batteries and powering the full 4A load simultaneously.
- 18" x 14.5" x 4.62" Steel Enclosure: The enclosure depth is 4.62 inches — verify rough-in clearance in shallow-wall or closet installations before ordering. The 18-inch width accommodates most standard backboxes and allows room for cable routing alongside the battery stack.
- Operating Range 0°C to 49°C: Suitable for conditioned mechanical rooms and typical interior telecom closets. Not rated for unheated outdoor enclosures or extreme cold environments.
Integration and Compatibility
The T1M1LCK3D is designed as a power plant for access control systems — it does not include a built-in controller, reader interface, or relay board. Pair it with an access control panel that accepts a supervised power input, then wire the supervision outputs to the panel's fault inputs for full monitoring. The selectable output voltage (12V or 24VDC) lets you match electrified strikes, magnetic locks, or REX devices without a voltage converter in the field. For multi-door deployments needing distributed power, reference our access control power supplies category for additional Altronix distribution options. Installers working with a video surveillance recorder in the same closet should budget the T1M1LCK3D's 3.5A mains draw on the circuit before adding other loads.
Frequently Asked Questions
Q: What output voltages does the T1M1LCK3D support?
A: The T1M1LCK3D supports selectable 12VDC or 24VDC output. At 12VDC the continuous output current is 4A; at 24VDC it is 3A continuous maximum.
Q: How much battery backup capacity is included?
A: The enclosure houses two 7AH/12VDC sealed lead acid or gel batteries — 14AH total. Actual backup duration depends on the connected load current draw.
Q: What agency listings does the T1M1LCK3D carry?
A: The T1M1LCK3D is listed under UL294 and cUL s319-05, and carries CE marking. These are the primary listings required for access control power supplies on commercial projects.
Q: What supervision signals does the T1M1LCK3D provide?
A: The unit supervises AC fail, battery fail, and battery presence. These outputs can be wired to an access control panel or alarm board for remote fault monitoring.
Q: What type of batteries does the T1M1LCK3D accept?
A: The T1M1LCK3D accepts sealed lead acid or gel type batteries at 7AH/12VDC. Two batteries are housed within the enclosure.
Q: What are the enclosure dimensions?
A: The enclosure measures 18 inches wide by 14.5 inches tall by 4.62 inches deep. Shipping dimensions are 21.75" x 18.25" x 5.75" at 22 lbs shipped weight.
The T1M1LCK3D is the Altronix unit I reach for on single- or two-door commercial access control jobs where the spec sheet demands UL294-listed power and the GC expects a clean, self-contained enclosure. The selectable 12/24VDC output is a genuine field advantage — I've pulled it off the truck for both 12V magnetic lock installs and 24VDC electrified hardware on the same job type without carrying a second supply.
Technical Highlights:
- Dual 7AH Battery Stack: Two cells inside the enclosure give you 14AH at 12VDC — at a 400mA average draw on a two-reader door, you're looking at well over 24 hours of standby before the batteries are depleted, which covers most UL294 secondary power requirements without any external battery cabinet.
- 4A @ 12VDC Continuous Output: That headroom supports multiple 12VDC locks, readers, and REX devices on a single supply without running the unit at its ceiling — thermal performance and battery charge recovery are both better when you're not operating at maximum rated current continuously.
- Three-Point Supervision (AC/Battery Fail/Battery Presence): All three outputs wire directly to your panel's fault zone inputs. On a monitored commercial site, this is the difference between knowing a battery failed last Tuesday versus discovering it during the fire marshal's inspection.
Deployment Considerations:
- The 4.62-inch enclosure depth is the spec to verify first — shallow drywall cavities and recessed backboxes in older commercial buildings can make that clearance tight. Measure before you order.
- Operating temperature tops out at 49°C (120°F). A sealed mechanical room in a sun-facing exterior wall in a hot climate can exceed that — verify ambient conditions before commissioning.
The T1M1LCK3D is the right call for UL294-bid commercial office or light-industrial access control installs where a self-contained, dual-battery, supervision-capable supply is required and the door count is two or fewer per supply. It is not the right tool for large multi-door arrays or outdoor unheated enclosures.
