FLEX SLS 3.0 Low-Voltage Construction Lighting
An advanced low-voltage temporary lighting system. Safe, rugged, flexible, and reusable from one project to the next.
Jobsite Lighting That’s Safe Enough to Touch
FLEX SLS 3.0 is a 27.5VDC Class 2 low-voltage construction lighting system that takes the line-voltage hazard out of temporary jobsite illumination. Twist-and-lock T-Connectors eliminate splicing, modules reconfigure on the fly, and the whole system can be unscrewed and redeployed on the next project.
- 27.5VDC Class 2 low-voltage — same hazard class as automotive lighting
- Warm to the touch — safe for direct worker contact during operation
- Twist-and-lock T-Connector design — up to 68 modules per FPS550 power supply
- IP66 weather-resistant — rated for outdoor and wet jobsite conditions
- OSHA compliant — made in Central Islip, NY, with optional battery backup for emergency egress
Key Specifications
| Operating Voltage | 27.5VDC (Class 2 low-voltage) |
|---|---|
| Module Lineup | FM2A (6W / 1000 lm) · FM10A (21W / 3000 lm) · FM30A (30W / 6000 lm) |
| Correlated Color Temperature | 4000K |
| CRI | ≥ 80 |
| Ingress Protection | IP66 |
| System Capacity (FPS550) | Up to 68× FM2A, 24× FM10A, or 8× FM30A across two 340’ bus lines |
| Surface Temperature | Warm to the touch (safe for worker contact) |
| Housing Material | Extruded aluminum with polycarbonate lens |
| Lens | Impact-resistant frosted polycarbonate |
| Connection Type | Twist-and-lock T-Connector with piercing-tooth contact (no splicing) |
| Power Supply (FPS550) | 550W · 120-277VAC input · 27.5VDC output · 3kV surge suppression · ETL listed |
| Rated Lifespan | L70 > 80,000 hours (LM79/LM80) |
| Operating Temperature | -30°C to +50°C (-22°F to +122°F) |
| Drop Rating | 15’ drop test · impact-resistant housing |
| Mounting | Hook, cable-tie, magnetic mount, bracket; CDB1 deck-box pre-pour kit available |
| Certifications | ETL Listed, OSHA Compliant; optional battery backup available; 3-year warranty on FPS550 |
Energy Savings vs. Traditional Temporary Lighting
At a typical jobsite illuminance target of ~3,000 lumens per fixture station, here’s how a single FLEX SLS FM10A module compares to the conventional alternatives it replaces:
| Light Source | Power to deliver ~3,000 lm | Efficacy (lm/W) | Reduction vs. Incandescent |
|---|---|---|---|
| 120V Incandescent stringer (100W bulb) | ~176 W | ~17 lm/W | — |
| CFL stringer (26W spiral) | ~49 W | ~62 lm/W | ~72% |
| FLEX SLS FM10A module | 21 W | ~143 lm/W | ~88–90% |
Methodology: incandescent stringer figures based on standard 100W A19 bulb (~1,700 lm, 17 lm/W) per ANSI/IESNA LM-79. CFL figures based on 26W spiral lamp (~1,600 lm, 62 lm/W). FLEX SLS figures from third-party LM-79/LM-80 testing of the FM10A module. Construction-site savings compound further because FLEX SLS modules are reused project-to-project (vs. consumed-and-disposed stringer bulbs) and run on a 27.5VDC bus with no inrush losses.
Features & Benefits
Low-Voltage Safety
Class 2 operation puts FLEX SLS in the same shock-hazard class as automotive lighting. The CDB1 concrete deck box pre-routes the bus line on pour day, speeding up installation for the electricians on the crew.
Warm to the Touch
Even during extended operation, FLEX SLS 3.0 modules remain warm to the touch — safe for direct worker contact. No burn risk from accidental contact on crowded jobsites.
Modular Plug-and-Play
Twist-and-lock T-Connectors with piercing-tooth contacts eliminate splicing. One FPS550 power supply runs up to 68 modules across two 340-ft bus lines. Reconfigure layouts as the jobsite evolves — modules unscrew and redeploy on the next project.
OSHA Compliant
Meets OSHA construction lighting requirements for foot-candle levels and voltage safety. Documentation packages available for DOB site inspections and safety audits.
Weather-Resistant IP66
IP66-rated housing and sealed T-Connectors handle rain, dust, and jobsite debris. The 15-ft drop-test rating handles real-world abuse on active construction zones.
80,000 Hour Lifespan
LED modules rated L70 > 80,000 hours per LM79/LM80. Modules unscrew from the bus line and redeploy on the next project — backwards compatible with previous FLEX SLS generations.
Applications
FLEX SLS 3.0 is the standard for temporary lighting on active construction sites across the Northeast and beyond.
How FLEX SLS lays out on a real jobsite
Spacing recommendations for 2 ft, 4 ft, and 8 ft modules in typical room sizes — from small studios to open commercial floors.
Related Products
Mounting & system accessories
Purpose-built accessories that extend the FLEX SLS 3.0 system for embedded slab installations and other field configurations.
CDB1 Concrete Deck Box
Three-piece pre-pour mounting system that embeds FLEX SLS module locations directly into the slab. Mounting plate nails to the form, chamber snaps in, top cover protects the bus line during pour, and after cure the modules drop in and the bottom plate gets skim-coated. Compatible with FM2A, FM10A, and FM30A modules.