Altronix AL1002ULADA 24VDC 10A NAC Power Extender
Overview
The Altronix AL1002ULADA is a voltage-regulated NAC (Notification Appliance Circuit) power extender designed to expand fire alarm system capacity without requiring a costly FACP upgrade. When a single Fire Alarm Control Panel lacks sufficient output circuits for horns, strobes, and other notification appliances across a facility, the AL1002ULADA connects remotely via 120VAC input and 24VDC dry-contact triggers to provide independent, synchronized alarm outputs. This is especially valuable in multi-zone institutional buildings, healthcare facilities, and industrial plants where distributed notification is mandated but panel capacity limits expansion.
Key Features
- Configurable Output Capacity: Choose four Class B outputs, two Class A outputs, or one Class A plus two Class B circuits simultaneously — flexibility that means you only deploy what the facility layout requires, avoiding overprovisioning of unused outputs.
- 10A Total Power with Per-Output Limits: Delivers 24VDC @ 10A maximum alarm current with 2.5A ceiling per individual output; prevents a single high-draw appliance (like a multi-candela strobe) from starving other circuits, a common troubleshooting headache in distributed systems.
- Dual Trigger Inputs: Two independent 8–30VDC dry-contact trigger inputs, each drawing only 6.5mA from the FACP — low load means no risk of pulling down the panel's logic circuits, and dual inputs enable redundant or zone-selective activation without additional relay hardware.
- Multi-Protocol Synchronization: Built-in support for Potter/Amseco, Gentex, System Sensor, and CooperWheelock sync modes, plus Temporal Code 3 and Steady Mode followers — eliminates the need for external sync modules or cross-company adapter headaches when notification appliances from different vendors must flash and sound in unison.
- Output Loop Supervision: Steers fault detection to either input 1 or input 2, captures intermittent loop problems in trouble memory, and provides ground-fault detection — catches open or shorted NAC wiring before a real alarm event exposes the gap.
- Automatic Battery Failover: Accepts sealed lead-acid or gel-type batteries (sold separately) and switches to battery power instantaneously if AC mains drop — ensures notification appliances continue signaling during a power outage, critical where evacuation or life safety depends on sustained audio/visual alarm.
- Thermal and Short-Circuit Protection: Automatic reset protects against appliance faults or wiring damage without requiring manual intervention or field technician rollout to restore service.
- Compact Enclosure: 15.5″ × 12″ × 4.5″ red powder-coated steel housing fits standard wall cabinets or DIN rail mounting, and durability in both climate-controlled and harsh environments means fewer environmental controller calls.
Integration & Compatibility
The AL1002ULADA works with both 12VDC and 24VDC fire alarm control panels, making it a retrofit solution for legacy systems as well as new builds. The dual-input architecture allows independent activation from separate FACP circuits or zone boards, enabling staged evacuation or zone-specific notification without wiring complexity. Voltage regulation ensures consistent output to notification appliances regardless of wire run length or total load — a long run to a remote strobe will not sag the 24VDC rail, preserving brightness and clarity. Ground-fault detection and common trouble input/output provide tie-ins to building management or central station monitoring, so facility operators know immediately if a NAC loop degrades.
Agency Approvals & Compliance
The AL1002ULADA carries UL864 listing (Control Units and Accessories for Fire Systems), MEA NYC Department of Buildings approval, FM Factory Mutual approval, and California State Fire Marshal (CSFM) certification — authorizations required for life-safety installations in most jurisdictions. Battery backup support aligns with ADA compliance where continuous notification is mandatory during emergencies.
Frequently Asked Questions
Q: Can the AL1002ULADA be deployed in an existing fire alarm system without panel replacement?
A: Yes. The AL1002ULADA connects remotely to any 24VDC FACP via dry-contact triggers, so there is no need to upgrade or reprogram the main control panel. This is the primary advantage in retrofit scenarios where the FACP is already installed but lacks NAC capacity.
Q: What happens to notification appliances if AC power to the AL1002ULADA fails?
A: If a sealed lead-acid or gel battery is connected (sold separately) and configured, the AL1002ULADA switches instantaneously to battery power, maintaining 24VDC output to all configured NAC circuits. Without a battery, AC loss will stop alarm signaling unless the backup battery is installed.
Q: Does the AL1002ULADA require programming or configuration tools?
A: Configuration is done via field-selectable jumpers or switches on the unit for output mode (Class A/B mix), synchronization protocol selection, and input/output loop supervision routing. No software or proprietary programming tools are required.
Q: Will the AL1002ULADA synchronize notification appliances from different manufacturers?
A: Yes. The unit includes built-in sync support for Potter/Amseco, Gentex, System Sensor, and CooperWheelock protocols, ensuring horns and strobes from multiple vendors flash and sound in unison without external sync modules.
Q: How is the AL1002ULADA powered, and what is its input current draw?
A: The AL1002ULADA accepts 120VAC @ 60Hz input. Actual current draw depends on load (number and type of notification appliances connected), but the input is not specified in strict milliamp terms in the standard documentation — consult the datasheet for circuit breaker sizing recommendations.
Q: Can the AL1002ULADA be mounted on a DIN rail or only in an enclosure?
A: The unit fits standard cabinet installations; verify mounting hardware compatibility with your enclosure type. The compact 15.5″ × 12″ × 4.5″ form factor is designed for wall cabinet integration.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
I specify the AL1002ULADA when a facility has exhausted the NAC capacity of its existing FACP but cannot justify a full control panel replacement — which is most retrofit situations. The 10A total output with 2.5A per circuit limit is the right power envelope for 24VDC notification: enough to drive multiple strobes and horns without overkill, yet constrained enough to prevent a single fault from cascading. Built-in sync for four major protocols (Potter, Gentex, System Sensor, CooperWheelock) eliminates the need for external relay logic or third-party sync modules, a real time-saver during commissioning.
Technical Highlights:
- Dual 8–30VDC Trigger Inputs with 6.5mA Draw: Low logic load on the FACP means no panel brownout risk; dry contacts allow independent or redundant activation from multiple zones without rewiring the main panel.
- Class A/B Output Flexibility: Four Class B, two Class A, or mixed circuits give you exact capacity match to site layout — no overprovisioning of unused channels.
- Output Loop Supervision with Trouble Memory: Steered to Input 1 or 2 and captures intermittent faults, so you catch wiring issues or failed appliances before the next real alarm test or actual event.
- Instantaneous Battery Failover: Sealed lead-acid or gel batteries (sold separately) ensure NAC outputs stay live if commercial AC drops — mandatory for life-safety compliance in most jurisdictions.
Deployment Considerations:
- This is a FACP extender, not a standalone alarm device — it requires a functioning control panel with dry-contact trigger capability. If your panel has no spare contact outputs, you'll need to add a relay module or reprogram zone logic.
- Battery backup requires separate battery purchase and wiring; budget for sealed lead-acid or gel cells and ensure your enclosure has thermal and space headroom, especially in climates prone to temperature swings.
- Multi-protocol sync support is excellent, but verify your exact appliance models and their protocol versions before spec; older Gentex or System Sensor units may use legacy sync codes that differ from current product lines.
- The 2.5A per-output cap is firm — if you need to drive a very high-candela strobe array on a single circuit, this unit will not support it; you would need to split the load across two Class B outputs or consider a higher-capacity extender.
Deploy the AL1002ULADA in multi-tenant office buildings, healthcare campuses, or industrial plants where zone-by-zone evacuation or distributed notification is required but the FACP lacks output circuits. It avoids costly panel upgrades and simplifies retrofit wiring — a solid fit for integrators and facility teams looking to expand existing systems.
