Altronix EFLOW4NA8DV Access Power Controller with 8 PTC Class 2 Relay Outputs
The Altronix EFLOW4NA8DV is a 220VAC-input access power controller designed to distribute and switch power across eight independently controlled outputs for access control hardware — mag locks, electric strikes, magnetic door holders, and similar devices. It converts a 220VAC 50/60Hz input (at 2.1A draw) into eight individually trigger-controlled 12VDC or 24VDC PTC-protected outputs at 4A total supply current, with an integrated battery charger and FACP fire alarm interface built in. If you're deploying access control across a multi-door facility and need to keep lock power supervised, fail-safe/fail-secure selectable, and fire alarm compliant all in one enclosure, this is the unit to evaluate.
The EFLOW4NA8DV is part of Altronix's Altronix access power controller line — a range purpose-built for commercial-grade access control integration. For broader context on selecting the right power distribution approach for your installation, see the access control category.
Key Features
- Eight Independently Controlled 12/24VDC Outputs, 4A Total: Each of the eight outputs is triggered independently via open collector or normally open dry contact inputs from your ACS, card reader, keypad, PIR, or push button — so a single controller handles a full eight-door suite without requiring separate power supplies per door. Output voltage is selectable 12VDC or 24VDC depending on your lock hardware spec.
- Fail-Safe and Fail-Secure Mode per Output: Any output can be individually configured for fail-safe (power removed = door unlocks) or fail-secure (power removed = door stays locked), or any mix across the eight outputs. This matters in mixed-use facilities where fire exits must be fail-safe while server room doors stay fail-secure — one unit covers both requirements without compromise.
- PTC Class 2 Protection on Every Output: Resettable PTC overcurrent protection on each output prevents a shorted lock cable from taking down adjacent doors. No fuse replacement required after a wiring fault — the output resets once the fault clears. Short circuit and thermal overload protection are also included.
- FACP Fire Alarm Interface with Per-Output Selectability: The fire alarm disconnect can be independently enabled or disabled for any or all eight outputs — critical when some doors need to release on alarm (egress paths) while others should not. Accepts normally open, normally closed, or polarity reversal input from the FACP signaling circuit. A form
