Built for construction sites, warehouses, shipyards, and large industrial projects, YouLumi LED String Lights provide bright, durable, and energy-efficient illumination. With IP65 waterproof protection and ETL safety certification, they ensure reliable performance in harsh working conditions.
Product Highlights
Illuminate construction sites, warehouses, and shipyards with Youlumi 50ft junction box LED work lights—a rugged, IP65 and ETL solution aligned with OSHA/NEC for fast, reliable temporary lighting.
Per head: 12/16/20W → 1,500–2,500 lm • Spacing: ~10 ft (3.0 m) • Junction box for hardwiring/custom connections.
Construction-grade build for harsh conditions with frosted low-glare optics. IP65 weather protection and ETL listing support compliant use under OSHA/NEC. Integrated hooks speed install; the junction box enables secure hardwired deployment.

100–277 VAC for global job sites.
2700K–6500K for task and area lighting.
SJTW/SOOW cords; steel carabiner hooks for secure mounting.
Frosted lenses minimize glare and eye strain.
IP65; ETL listed / CE compliant.
5 heads × 12/16/20W → 7,500–12,500 lm at only 60–100W.
Connect up to 6 strings; junction box supports hardwiring/custom terminations.

Choose orange or yellow for high visibility in busy zones, or black for a clean, discreet look in warehouses and semi-permanent installs.
This table compares the 50ft junction box series. Values per head unless noted.
| Model No. | Watts | Input Voltage | CCT (K) | Lumens | PF | Product Dim. | Total Length | Heads | Certificate |
|---|---|---|---|---|---|---|---|---|---|
| YL-HA11-5*J12W-M-XXK-3P | 5 × 12W | 100–277V | 2700–6500 | 1,500 × 5 | ≥0.9 | Ø120 × H180 mm 4.72″ × 7.09″ | 15.78 m / 51.77 ft | 5 | ETL |
| YL-HA11-5*J12W-M-XXK-2P | 5 × 12W | 100–277V | 2700–6500 | 1,500 × 5 | ≥0.9 | Ø120 × H180 mm 4.72″ × 7.09″ | 15.78 m / 51.77 ft | 5 | ETL |
| YL-HA11-5*J16W-M-XXK-3P | 5 × 16W | 100–277V | 2700–6500 | 2,000 × 5 | ≥0.9 | Ø120 × H180 mm 4.72″ × 7.09″ | 15.78 m / 51.77 ft | 5 | ETL |
| YL-HA11-5*J16W-M-XXK-2P | 5 × 16W | 100–277V | 2700–6500 | 2,000 × 5 | ≥0.9 | Ø120 × H188 mm 4.72″ × 7.40″ | 15.78 m / 51.77 ft | 5 | ETL |
| YL-HA11-5*J20W-M-XXK-3P | 5 × 20W | 100–277V | 2700–6500 | 2,500 × 5 | ≥0.9 | Ø120 × H180 mm 4.72″ × 7.09″ | 15.78 m / 51.77 ft | 5 | ETL |
| YL-HA11-5*J20W-M-XXK-2P | 5 × 20W | 100–277V | 2700–6500 | 2,500 × 5 | ≥0.9 | Ø120 × H180 mm 4.72″ × 7.09″ | 15.78 m / 51.77 ft | 5 | ETL |
Request a detailed quote and share your project requirements.
Choose CCT (2700–6500 K), plug type, tripod options, and quantity.
Finalize price and lead time, then proceed to manufacturing.
Arrange shipping, inspection, and receive full technical support and 5-year warranty.





Temporary lighting for scaffolding, corridors, and zone lighting with hardwired reliability.
Task or primary lighting tied into existing circuits for a clean install.
Fixed linear aisle lighting with consistent output and rugged housings.
Semi-permanent patio, deck, or walkway lighting via junction boxes.
Loading docks, container stacks, and logistics zones with marine-grade reliability.
New builds, dry docks, and repair bays where robust hardwiring is essential.
Medium-sized tents and service areas with secure, discreet power routing.
Durable, code-compliant illumination with hardwired security.
Barns, sheds, and farm facilities benefitting from IP65 durability.
Yes. The Junction Box industrial string lights are designed for direct hardwiring into an electrical system. This makes them ideal for construction sites, warehouses, workshops, and shipyards where a secure, semi-permanent, or permanent lighting solution is required.
Absolutely. These lights are built with durable SJTW/SOOW cords, protective frosted covers, and feature an IP65 waterproof rating. Combined with ETL certification and compliance with OSHA and NEC safety standards, they are safe and reliable for use in harsh outdoor environments.
You can link up to 6 sets of 50ft strings, creating a continuous lighting run of up to 300ft. This feature makes them perfect for large-scale projects such as tunnels, ports, shipyards, or event setups, while keeping energy use efficient and installation safe.
Yes, we offer full OEM/ODM services, including logo printing, packaging design, wavelength configuration, and product design adjustments to meet the needs of clinics, retailers, and distributors.
We provide comprehensive after-sales service and distributor support, including product training, operation manuals, marketing materials, and technical consultation to help partners quickly enter the market and increase sales.
