Altronix EFLOW104NKA8DQM Dual-Voltage Access Control Power Supply with Network Integration
Overview
The Altronix EFLOW104NKA8DQM is a UL-listed, dual-voltage power and access control supply designed for mid-to-large commercial security installations where simultaneous 12VDC and 24VDC loads — locks, readers, cameras, and control panels — need to run from a single, supervised enclosure. Rated at 240W total with 6A continuous output on each voltage rail, it handles real-world mixed-device panels without the thermal derating games you see with undersized supplies. If you're sizing power for an access control system with a mix of electric strikes, mag-locks, and PoE endpoints, this unit gives you the headroom to do it correctly the first time.
The EFLOW104NKA8DQM draws from 120VAC at up to 4.5A and converts cleanly to both rails simultaneously, protected upstream by a 6.3A/250V input fuse. The enclosure accommodates two internal 12AH/12VDC sealed lead-acid or gel batteries and supports external battery expansion up to 40AH or 65AH — a meaningful range for installations where standby runtime requirements drive the design. Failover to battery is instantaneous, so downstream devices never see a power gap during a utility event.
For integrators working with Altronix power supplies and network-supervised installations, this unit carries UL294, ULC-S319, UL603, ULC-S318-96, UL1481, and CE listings — the full stack required for access control, burglar alarm, and fire alarm auxiliary power applications across US and Canadian markets. That listing breadth matters at the AHJ level, particularly in jurisdictions that inspect panel documentation.
Key Features
- 240W Total Power / Dual Rails: 12VDC and 24VDC outputs deliver up to 6A continuous each, with a 10A secondary output rating — enough headroom for mixed lock-and-reader panels without stacking supplies or running separate home-run circuits to the panel.
- Instantaneous Battery Failover: No delay switching to battery during utility loss means electric locks stay powered and access transactions don't drop mid-cycle. Critical for applications where a brief power gap trips a door to fail-secure and strands occupants.
- Dual Internal Battery Slots — 12AH Standard, 40AH/65AH External: Two 12AH/12VDC batteries mount inside the enclosure for clean, supervised standby capacity. When local codes or the customer SLA demand longer runtime, the supply supports external expansion to 40AH or 65AH without changing the panel or wiring topology.
- PTC-Protected Outputs at 2.5A: Polymer positive temperature coefficient protection on outputs self-resets after a fault clears — no blown fuses to swap in the field, no service call for a tripped output on a momentary short. This matters on door panels where wiring faults happen during initial commissioning.
- 1A Auxiliary Output: The auxiliary rail handles ancillary loads — request-to-exit sensors, door position switches, panel accessories — without pulling from the primary rails and skewing your load calculations.
- Battery Fuse Protection at 15A/32V: Dedicated battery fusing prevents a wiring fault from back-feeding the battery bank and creating a thermal event inside the enclosure. Standard practice, but worth confirming on any supply you're using with larger capacity batteries.
- Multi-Standard Agency Listings (UL294, ULC-S319, UL603, ULC-S318-96, UL1481, CE): Covers access control power, burglar alarm power, fire auxiliary power, and Canadian equivalents — one unit that passes AHJ inspection across multiple system types on a multi-tenant build.
- 0°C to 49°C Operating Range: Handles telecom-closet and mechanical-room temperatures without derating. The 123 BTU/Hr. heat output is moderate for a 240W supply — plan airflow in sealed enclosures but this isn't a thermal problem unit.
- Battery Chemistry Flexibility — SLA or Gel: Accepts sealed lead-acid or gel-type batteries, giving you sourcing flexibility if your standard battery vendor runs short on one chemistry without requiring a supply swap or compatibility verification.
- Compact Footprint at 15.5
