Product Description
Lightalarms LMIU-400 Mini Inverter Unit provides 400 watts of uninterrupted emergency lighting power with a compact, high-efficiency pure sine wave inverter. Designed for surface mounting, this 14-gauge steel inverter ensures reliable operation for LED, fluorescent, and incandescent fixtures during power loss, maintaining illumination for up to 90 minutes.
Brand: Lightalarms (ABB / Emergi-Lite)
Model: LMIU-400
Series: Mini Inverter Series
Power Rating: 400W Pure Sine Wave Output
Input/Output Voltage: 120V or 277V AC, 60Hz
Battery Type: 12V Valve-Regulated Lead Acid (VRLA), Maintenance-Free
Backup Duration: 90 minutes at 400W
Construction: 14-gauge steel housing, white semi-gloss powder coat
Mounting: Surface wall mount
Approvals: UL 924, NFPA 101, NEC, Title 20 (CEC)
Diagnostics: Improved non-audible self-test circuitry (audible optional)
Compatibility: LED, fluorescent, and incandescent lighting loads
Dimensions: 24" W × 20" H × 10.5" D
Weight: 150 lbs (65 lbs without batteries)
Free shipping on orders over $250
Product Benefits
- Uninterrupted emergency lighting for critical applications up to 400W total load capacity.
- High efficiency sine wave output ensures smooth power delivery to sensitive LED and fluorescent loads.
- Automatic self-diagnostics for continuous monitoring and compliance with NFPA 101 and UL 924 standards.
- Rugged construction—14-gauge steel housing with powder-coat finish for durability and longevity.
Key Features
- Load capacity: 400W with 90-minute backup; derated for longer durations (300W @ 2h, 200W @ 3h, 150W @ 4h).
- Electronics: Pure sine wave inverter, low voltage disconnect, temperature-compensated charger, and fuse protection.
- Controls: Fully automatic microcontroller-based diagnostic charger with self-test capability.
- Lighting control override: 0–10V dimming system support with load shedding at 25%, 50%, or 75% brightness levels.
- Self-Diagnostics: Improved non-audible self-diagnostic circuitry; optional audible version available.
- Networking: Nexus®Pro and Nexus® wireless options for monitoring, reporting, and system testing.
- Battery: Sealed, maintenance-free 12V VRLA batteries rated for 8–10 years of service life.
Specifications
Technical Specs
| Input / Output Voltage | 120V or 277V AC, 60Hz |
| Inverter Type | High-efficiency pure sine wave inverter |
| Power Rating | 400W continuous output |
| Transfer Time | Less than 1 second |
| Voltage Regulation | ±5% on emergency |
| Frequency Regulation | 60Hz ±1% |
| Operating Temperature | 20°C to 30°C (68°F–86°F) |
Physical Specs
| Housing Material | 14-gauge steel with white semi-gloss powder coat |
| Dimensions (W × H × D) | 24" × 20" × 10.5" |
| Weight | 150 lbs (with battery), 65 lbs (without battery) |
| Mounting | Surface wall mount |
Performance & Compliance
| Standards | UL 924, NFPA 101, NEC, CEC Title 20 |
| Warranty | 3-year unit warranty; 3-year full + 7-year pro-rata battery warranty |
| Load Shedding Control | Selectable 25%, 50%, or 75% output for 0–10V dimming |
Application Examples
- Commercial buildings, offices, and industrial facilities
- Healthcare and institutional emergency egress lighting
- Retail stores and educational facilities
- Warehouses and high-bay emergency lighting systems
Installation Tips
- Mount securely to a wall with 1/4" screws and flat washers for each keyhole mount.
- Allow sufficient clearance for ventilation and battery access.
- Ensure the inverter is connected to a single voltage input (120V or 277V only).
- Always disconnect AC and battery power before servicing.
- Perform an annual 90-minute test per NFPA 101 and local code requirements.
FAQ
What is the runtime of the LMIU-400?
It provides 90 minutes of full-load operation (400W), or extended runtimes at reduced wattage (300W for 2 hours, 200W for 3 hours).
Can this inverter power LED fixtures?
Yes. It supports LED, fluorescent, and incandescent fixtures, including 0–10V dimming control loads.
Does it include self-diagnostics?
Yes, the standard unit includes non-audible automatic self-diagnostics with manual test capability.
Is it compliant with UL and NFPA standards?
Yes, it meets UL 924 and NFPA 101 Life Safety Code requirements.
How is it mounted?
Surface wall-mount design with rear keyhole slots for easy installation.
Does it include a battery?
Yes, it uses two sealed 12V lead-acid batteries, providing maintenance-free operation.
