Altronix AL802ULADAJ NAC Power Extender - 24VDC @ 8amp. 2

Altronix AL802ULADAJ NAC Power Extender

Overview

The Altronix AL802ULADAJ is a UL-listed voltage-regulated remote NAC power extender designed for fire alarm system expansion. This device connects directly to any 24-volt Fire Alarm Control Panel (FACP) and delivers cost-effective notification appliance circuit (NAC) expansion with auxiliary power support for system accessories. The AL802ULADAJ addresses ADA compliance requirements and extends NAC capacity beyond panel limitations.

Key Features

• Flexible Output Configuration: Supports 2 Class A or 4 Class B notification appliance circuits, or 1 Class A and 2 Class B mixed configuration
• Power Delivery: 24VDC output at 8A maximum total circuit current with 2.5A maximum per individual output; 1A auxiliary power for system accessories
• Regulated Output: Filtered and regulated 24VDC power-limited outputs ensure stable operation of horns, strobes, and visual notification appliances
• Dual Input Channels: Two NC dry contact trigger inputs rated 8–30VDC from FACP at 6.5mA maximum draw per input
• Synchronization Support: Sync mode enables audible and visual notification appliances to silence or deactivate simultaneously; compatible with Potter/Amseco, Gentex®, System Sensor®, and CooperWheelock® synchronization protocols
• Temporal Coding: Supports Temporal Code 3, Steady Mode, and circuit follower mode to maintain synchronization across distributed notification appliances
• Output Loop Supervision: Programmable supervised indicating circuit with output loop supervision steered to Input 1 or Input 2; signal circuit trouble memory identifies intermittent loop problems
• Ground Fault Detection: Integrated ground fault detection and common trouble input and output for external trouble signal tie-in
• Protection & Failover: Thermal and short-circuit protection with auto-reset; instantaneous battery failover on AC loss (batteries sold separately; supports sealed lead acid or gel type)
• Input Power: 120VAC, 60Hz, 5A maximum input current
• Panel Compatibility: Works with 12VDC or 24VDC fire alarm control panels

Integration & Compatibility

The AL802ULADAJ integrates seamlessly into existing fire alarm architectures without requiring control panel modifications. Its dual input channels allow steering of loop supervision to either input, supporting complex NAC topologies across multiple zones or building wings. The device maintains backward compatibility with legacy 12VDC panels while supporting modern 24VDC systems. Synchronized notification via industry-standard protocols ensures coordinated evacuation signaling across distributed appliances.

Certifications & Compliance

The AL802ULADAJ carries UL listing per UL864 (Control Units and Accessories for Two Class A or Two Class B Fire Systems). It is also approved by the NYC Department of Buildings, Factory Mutual (FM), and California State Fire Marshal (CSFM), making it suitable for use in regulated commercial and institutional environments requiring third-party certification.

Physical Specifications

The unit ships in a red BC600 enclosure measuring 18" H × 14.5" W × 4.625" D. This compact footprint accommodates wall or DIN-rail mounting in electrical closets or equipment rooms without consuming excessive space.

James Everett

I have specified the Altronix AL802ULADAJ in multi-building fire alarm deployments where main panel NAC capacity was insufficient to serve all zones cost-effectively. This power extender consistently delivers reliable NAC expansion without the complexity or cost of upgrading the primary control panel.

Technical Highlights:

• Dual-Input Steering: The ability to independently steer output loop supervision to either Input 1 or Input 2 eliminates the need for multiple units in larger facilities; a single AL802ULADAJ can service two distinct trigger sources from a single FACP.
• Synchronization Protocols: Support for Potter/Amseco, Gentex®, System Sensor®, and CooperWheelock® sync standards means this extender works with virtually any current-generation notification appliance ecosystem without additional gating or relay logic.
• Trouble Memory & Supervision: The signal circuit trouble memory feature proved invaluable during commissioning—intermittent open circuits in long notification appliance runs were quickly identified without requiring technician callback visits.

Deployment Considerations:

• Plan battery backup capacity early: the AL802ULADAJ requires external sealed lead acid or gel-type batteries (not included). Ensure UPS or backup battery cabinet sizing accounts for 8A draw during alarm events plus standby supervision current.
• Verify FACP input voltage rating: though the device accepts 8–30VDC inputs, cross-check that your control panel's trigger outputs fall within this range to avoid nuisance resets or failed actuations.
• Ground fault detection requires proper grounding of the enclosure and notification appliance circuits; verify that building electrical infrastructure provides adequate return paths.

The AL802ULADAJ is a workhorse for NAC expansion in retrofit scenarios and new construction where zone distribution demands exceed single-panel capacity. Its compact form factor, industry-standard sync support, and loop supervision intelligence make it a reliable choice for integrators seeking cost-effective NAC scaling without panel replacement.