Altronix EFLOW104N8DV 8-Output 24VDC Power Supply/Charger with Fire Alarm Disconnect
Overview
The Altronix EFLOW104N8DV is a 220VAC-input power supply and battery charger that delivers eight individually PTC-protected 24VDC outputs at a combined 10A — purpose-built for access control and surveillance installations running on international 220V mains. If you're deploying door controllers, locks, or readers in a facility where 120VAC isn't available, this is the supply that handles the conversion cleanly and adds supervised battery backup in the same enclosure.
The unit ships pre-assembled in a BC300 wall-mount enclosure rated for indoor use, with space for two 12VDC/7AH batteries (sold separately) and 1/2" and 3/4" knockouts for conduit entry. It carries CE, TAA, NDAA, and BAA listings — relevant for federal, government, and defense-adjacent projects that require supply-chain documentation.
Key Features
- Eight PTC-Protected 24VDC Outputs @ 2A each: Auto-resettable PTC fusing means a shorted output recovers without a service call or manual fuse replacement — each output is individually protected, so one overloaded run won't take down the rest of the system.
- 10A Total Supply Current: With eight outputs sharing a 10A pool, you have enough headroom to drive a mixed load of electromagnetic locks, request-to-exit devices, and readers — typical door hardware draws 0.5–1.5A per door, so expect 7–12 doors depending on lock type.
- 220VAC Input (198–256VAC Working Range): The wide input tolerance absorbs voltage sag from long utility runs or facilities with marginal power infrastructure — useful in industrial environments where mains fluctuate.
- Supervised Battery Charger with Instantaneous Switchover: Built-in charger supports sealed lead-acid or gel batteries at up to 1.54A charge current. Switchover to standby power is instantaneous with no output interruption — critical for access-controlled doors that must not flicker open on power transition.
- Fire Alarm Disconnect (FAI): Supervised fire alarm disconnect with 10K EOL resistor operates on NO or NC trigger, latching or non-latching. In jurisdictions requiring doors to fail-unlock on fire alarm, this input handles the signal directly without external relays.
- Low Power Disconnect: Shuts down DC output terminals if battery voltage drops below 70–75% of nominal, preventing deep discharge that shortens sealed lead-acid battery life — a real-world cost saver over a 3–5 year service window.
- LinQ2-Ready: Compatible with Altronix's LINQ2 network communication module for remote monitoring of AC presence, DC output status, and battery health via IP. No additional hardware modifications needed — the interface is built in.
- AC and Battery Supervision: Form C contacts for both AC fail and battery fail/presence supervision. Notification trigger is selectable: 30-second delay (factory default) or 2-hour delay for sites that want to suppress brief outage alerts.
- Compact Wall-Mount Footprint: The BC300 enclosure measures 13"W x 13.5"H x 3.25"D and weighs 6.95 lbs — light enough for a single-person install on standard drywall or masonry with conduit knockouts already provided.
Integration and Compatibility
The EFLOW104N8DV integrates with Altronix's LinQ2 network module for remote diagnostics without requiring a separate monitoring appliance. It pairs naturally with access control panels that accept supervised power inputs, and the fire alarm disconnect input is compatible with standard NAC or relay-output fire panels. For projects sourcing from the broader Altronix power and access control line, this unit slots into the eFlow series architecture for centralized power management.
If you're specifying power for a multi-door access control deployment, review our access control power supplies category for additional current and output configurations. For projects requiring PoE-driven IP access readers, a companion PoE switch may be needed alongside this supply for IP-based edge devices. If you need help sizing battery backup runtime or selecting the correct supply for your door count, our security system design resources walk through the calculation.
Frequently Asked Questions
Q: Is the EFLOW104N8DV NDAA Section 889 compliant?
A: Yes. The EFLOW104N8DV carries an NDAA listing, making it suitable for federal and government projects that require Section 889 supply-chain compliance. It is also TAA and BAA compliant.
Q: What batteries does the EFLOW104N8DV support, and are they included?
A: The unit supports up to two 12VDC/7AH sealed lead-acid or gel-type batteries. Batteries are sold separately and are not included with the unit.
Q: How many doors can the EFLOW104N8DV typically power?
A: With 10A total output across eight 2A-rated PTC outputs, capacity depends on your hardware. Most electromagnetic locks draw 0.5–1.0A; electric strikes run slightly lower. A realistic range is 7–12 doors depending on lock type and whether readers are powered from the same supply.
Q: Does the fire alarm disconnect work with both NO and NC fire panel outputs?
A: Yes. The supervised fire alarm disconnect input accepts either normally open (NO) or normally closed (NC) trigger configurations, and can be set to latching or non-latching operation. A 10K EOL resistor is included for supervised loop integrity.
Q: What is the warranty on the EFLOW104N8DV?
A: Altronix offers a lifetime warranty on this product, as listed on the manufacturer's product page.
Q: Can the EFLOW104N8DV be monitored remotely?
A: Yes, when paired with Altronix's optional LINQ2 network communication module (sold separately), the unit supports remote monitoring and reporting of power supply diagnostics over IP.
The EFLOW104N8DV is the unit I specify when a project calls for 220VAC mains, supervised battery backup, and fire alarm integration in a single wall-mount package. The 198–256VAC working range is the detail that matters in practice — international facilities and industrial buildings often see voltage well outside the 220V nominal, and a supply that chases that range with real tolerance avoids nuisance resets during brownouts.
Technical Highlights:
- PTC Auto-Resettable Protection: Each of the eight outputs resets automatically after a fault clears — on a multi-door install, this eliminates service calls for blown fuses on a single circuit.
- 1.54A Battery Charge Current: Sized correctly for two 12VDC/7AH batteries; expect roughly 8–10 hours to recharge from a full discharge, consistent with UL294 standby requirements for most access control applications.
- Supervised FAI with EOL Resistor: The 10K end-of-line resistor on the fire alarm disconnect input lets you verify loop continuity continuously — a tamper or cut wire shows up as a fault before it becomes a life-safety failure at 3 a.m.
Deployment Considerations:
- Battery runtime at full 10A load on two 7AH batteries is approximately 1 hour — size your battery bank accordingly if your spec requires 4 or 8 hours of standby; you'll need an external battery cabinet rather than relying solely on the BC300 enclosure capacity.
- The LINQ2 module is sold separately; if remote diagnostics are in your scope of work, budget and order it at the same time — retrofitting it later adds a truck roll.
This supply fits best in international facility deployments — manufacturing plants, logistics hubs, or data centers running on 220V mains — where you need door hardware power, battery backup, and fire panel integration consolidated into a single listed enclosure without running a separate 120V circuit.
