Altronix T2HWK712 Power Supply and Access Control Enclosure Kit
The Altronix T2HWK712 is a fully integrated power supply, access controller, distribution module, and voltage regulator kit — packaged in a single UL294-listed steel enclosure built for commercial-grade door control and surveillance power infrastructure. Drawing 4.2A max from a 115VAC/60Hz feed and delivering 24VDC at 10A continuous, this kit is sized for multi-door access control deployments where a single, code-compliant assembly is preferable to piecing together discrete components. The 27.25" x 21.5" x 6.5" enclosure houses all four functional modules plus a 12AH/12VDC sealed battery, giving you a self-contained backup power solution without a separate battery cabinet.
Overview
System integrators specifying access control infrastructure for corporate lobbies, data centers, or multi-tenant facilities often face a common problem: sourcing a UL294-compliant power and control assembly that fits in a single backboard, passes inspection, and doesn't require custom wiring between mismatched components. The T2HWK712 addresses this directly. Altronix has pre-engineered the fusing, voltage regulation, and distribution into one enclosure tested to UL294 and cUL s319-05 — which means your AHJ inspection starts from a certified baseline, not a field-assembled guess. CE listing extends applicability for projects with international compliance requirements.
Browse the full Altronix power and access control catalog for compatible expansion modules and accessories.
Key Features
- 24VDC / 10A Continuous Output: The 10A continuous output rating supports multiple electric strikes, mag-locks, and card readers simultaneously without throttling — plan for roughly 500mA per electric strike and 250mA per card reader to estimate how many devices this supply can drive without external distribution.
- Integrated 12AH Battery Backup: The onboard 12AH/12VDC battery provides standby power during AC outages. At a typical 3–4A door-hold load, expect 3–4 hours of runtime — enough to cover most utility interruptions in a commercial building. No separate battery enclosure or charger circuit required.
- Voltage Regulator Module (24VDC → 12VDC @ 6A): The built-in regulator steps the 24VDC bus down to 12VDC at 6A continuous, powering 12V devices — cameras, intercoms, or supplemental readers — from the same enclosure. This eliminates a second power supply in installations mixing 24V access hardware with 12V surveillance equipment.
- Fused Protection at Every Stage: Each module is independently fused: 5A/250V on the power supply input, 3.5A/250V on the power supply output, 10A/32V on the access controller input, 3A/32V on access controller and distribution module outputs. Per-circuit fusing limits fault propagation — a shorted door circuit won't take down the entire access controller bus.
- UL294 / cUL s319-05 / CE Listed: UL294 is the standard for access control equipment in the US; cUL s319-05 covers Canadian requirements. Both listings mean the assembly has been independently tested — not just self-declared — which matters when the authority having jurisdiction (AHJ) pulls the permit drawings.
- 128 BTU/Hr Heat Dissipation: At 128 BTU/Hr the enclosure runs warm but not excessively hot. In a utility closet with ambient temperatures up to 49°C (120°F), verify room ventilation is sufficient — the operating range tops out at 49°C, and stacking multiple enclosures in a sealed IDF without airflow will push that limit.
- Operating Range 0°C to 49°C: Coverage for unheated mechanical rooms down to freezing and warm server rooms — but not outdoor or below-freezing applications. For outdoor enclosures, you'll need a thermostatically controlled heater kit; this unit is intended for conditioned or semi-conditioned interior spaces.
- Large Steel Enclosure (27.25" x 21.5" x 6.5"): The enclosure dimensions provide sufficient backboard real estate to mount an access controller board alongside the Altronix modules without crowding — important when the access panel needs conduit knockouts and field wiring space for six or more door circuits.
Integration and Compatibility
The T2HWK712 is designed to pair with commercial access control systems that accept 24VDC power input — including most panel-style two- and four-door controllers from major access control manufacturers. The 12VDC/6A regulated output makes it straightforward to co-locate IP cameras or analog cameras requiring 12VDC in the same riser or IDF closet, reducing the number of power home-runs to the head-end. For larger deployments requiring more doors or higher aggregate current, review Altronix's TROVE enclosure family for higher-capacity configurations. Pair this unit with a managed PoE switch in the same closet when you need to serve IP-based readers or door controllers on the same run. Consult your access control power supply selection guide for current-budget planning across multi-door deployments.
Frequently Asked Questions
Q: What is the continuous output current of the T2HWK712, and how many electric strikes can it support?
A: The T2HWK712 delivers 10A continuous at 24VDC. At a typical 500mA per electric strike, that supports up to 20 strikes at full load — though real-world deployments should budget current for readers, controllers, and any co-located 12V devices drawn from the integrated regulator.
Q: Does the T2HWK712 include battery backup, and how long will it run during a power outage?
A: Yes. The kit includes a 12AH/12VDC sealed battery. Runtime depends on load; at a 3–4A door-hold draw, expect roughly 3–4 hours of backup — adequate for most commercial utility interruptions.
Q: What certifications does the T2HWK712 carry?
A: The T2HWK712 is listed to UL294 (US access control equipment standard), cUL s319-05 (Canadian standard), and CE. These listings are independent third-party certifications, not self-declarations.
Q: Can the T2HWK712 power 12VDC devices like cameras or intercoms alongside 24VDC access hardware?
A: Yes. The integrated voltage regulator steps 24VDC down to 12VDC at 6A continuous, so 12V cameras or intercoms can share the enclosure's power bus without a separate supply.
Q: What is the maximum operating temperature for the T2HWK712?
A: The rated operating range is 0°C to 49°C (32°F to 120°F). This unit is designed for interior conditioned or semi-conditioned spaces — not outdoor or below-freezing environments without supplemental heating.
Q: How is the T2HWK712 protected against fault conditions?
A: Every stage is independently fused: 5A/250V at the power supply input, 3.5A/250V at its output, 10A/32V at the access controller and distribution module inputs, and 3A/32V at their outputs. A fault on one door circuit won't propagate to the entire system.
The T2HWK712 is the kind of assembly I reach for when a project's electrical inspector is going to scrutinize the access control power source — the UL294 and cUL s319-05 dual listing means you're handing the AHJ a certified document, not a field-assembled wiring diagram to defend. The 10A continuous output at 24VDC is the practical ceiling for most two- to four-door commercial deployments, and the built-in 12AH battery removes the standalone battery cabinet argument entirely.
Technical Highlights:
- Dual-Voltage Architecture (24VDC + 12VDC/6A): The onboard regulator's 6A continuous at 12VDC is substantial — enough to co-serve four to six low-power IP cameras or a mix of 12V intercoms and readers from the same closet without a second supply and its associated conduit run.
- Per-Stage Fusing: Five discrete fuse points (5A input, 3.5A PS output, 10A AC input, 3A AC output, 3A distribution output) mean a shorted door device faults locally. I've seen single-fuse supplies take down entire buildings' worth of door hardware from one bad strike coil — this topology prevents that.
- 128 BTU/Hr Thermal Load: That's the spec most installers skip until commissioning day. In a sealed telecom closet running at 35°C ambient with two of these units stacked, you're approaching the 49°C ceiling. Plan airflow or a small exhaust fan before closeout.
Deployment Considerations:
- Shipping weight is 59.3 lb — plan for a two-person lift and verify the wall rating for the backbox mount before the install crew shows up. The enclosure itself is 54.3 lb empty of accessories.
- The 49°C operating ceiling is a hard stop. Mechanical rooms adjacent to boiler equipment or south-facing exterior walls in non-climate-controlled buildings have exceeded this in summer surveys — measure before you specify.
The T2HWK712 is the right specification for a ground-floor lobby or mid-rise IDF closet access control consolidation point where you need a single, inspectable, battery-backed power and distribution node for two to four doors — and where the project's commissioning schedule doesn't allow for sourcing and integrating three separate components under a deadline.
