Features of 4LEDs SMD2835 Waterproof LED Module
1. Four-LED Layout for Greater Light Output per Module
The YS-MB7341 4-LED high-lumen sign module integrates four SMD2835 LEDs into a single lighting unit and delivers approximately 243 lm at 1.8W. The four-LED arrangement provides a higher output from each installation point, making it useful when a sign design calls for stronger illumination without simply increasing the total number of modules.
2. 135 lm/W Efficient SMD2835 Performance
The module achieves up to 135 lm/W luminous efficacy, providing a practical balance between output and energy consumption. This efficiency is especially useful in commercial signage that remains illuminated for long periods, where the total power demand of hundreds of modules can become an important part of project planning.
3. Constant-Current Operation for Consistent Output
The integrated constant-current design helps maintain more stable LED performance across connected modules. This is useful in commercial sign systems where variations in brightness between different parts of the installation can affect the appearance of lettering or graphics.
4. Compact Four-LED Housing
Despite incorporating four LEDs, the module remains relatively compact at 43.1 × 43.1 × 7.3 mm. Its square form factor can be useful when planning regular module layouts inside lettering, logos and sign panels.
4LEDs SMD2835 Waterproof LED Module Dimensions(mm)

4LEDs SMD2835 Waterproof LED Module Layout Density Guidelines
These factory-tested layout density guidelines are engineered specifically for our YS-MB7341 high-efficiency LED sign modules, ideal for commercial backlit signs, channel letters and custom light box fabrication. Reference the table below for engineer-recommended LED spacing (DX/DY), installation density per square meter, and projected surface illuminance across standard light box thicknesses. This reference helps signage fabricators and project engineers deliver uniform, shadow-free brightness across every sign face, while optimizing module quantities and keeping project costs on budget.
| Light Box Thickness(mm) | LED Spacing(mm) | Installation density(PCS/m²) | Surface illumination(Lux) | Watts per square(W/㎡) |
| 40 | DX=90, DY=90 | 121 | 9600~13000 | 210 |
| 50 | DX=100, DY=100 | 100 | 6000~7200 | 180 |
| 60 | DX=120, DY=120 | 64 | 4200~6000 | 115 |
| 80 | DX=140, DY=140 | 49 | 3000~4200 | 88 |
| 100 | DX=160 DY=160 | 36 | 2600~3600 | 64 |
| 120 | DX=180, DY=180 | 30 | 2200~2700 | 54 |

4LEDs SMD2835 Waterproof LED Module Wiring Diagram & Installation Guide(MAX; 20PCS/String)

Recommended Applications for 4LEDs SMD2835 Waterproof LED Module
1. Medium-Depth Channel Letter Systems
The YS-MB7341 LED module is suitable for channel letter structures with approximately 5–15cm internal depth. The four-LED arrangement provides more light from each module, which can be useful when the designer needs stronger illumination within the available cavity.
2. High-Visibility Storefront Letters
The four-LED configuration makes the YS-MB7341 LED module a practical choice for storefront lettering and prominent business signs where the illuminated face needs strong, consistent visibility. Its 243 lm output per module allows the lighting layout to be designed around higher-output lighting points.
3. Large Brand Logos and Corporate Identity Signs
For oversized logos and corporate identity displays, the YS-MB7341 LED module can provide a stronger illumination source within each installation position. This can be useful when lighting broad letter surfaces or larger graphic elements while keeping the module count and internal layout manageable.
4. OEM Sign Projects Requiring Higher Output

Packaging & Shipping Information for 4LEDs SMD2835 Waterproof LED Module
| Item No. | Qty Per bag(PCS) | Per/Carton(Bag) | Total Qty(Bag) | GK(Kg/Carton) | Dimension of outer carton(mm) | ||
| L | W | H | |||||
| YS-MB7341 |
100 |
10 |
1000 | 16.5 | 520 | 300 | 360 |

Professional 4LEDs SMD2835 Waterproof LED Module Manufacturer & Supplier
Founded in 2013, YESUN LED is a Shenzhen-based manufacturer specializing in LED signage and commercial lighting solutions. With 5,000㎡ of automated factory space, dedicated SMT lines, and strict full-process QC, we support OEM/ODM projects for customers in over 100 countries. To learn more about our team, factory, and production capabilities.
Product Certifications & Compliance
Our products comply with international standards including UL, ETL, CE, and RoHS certifications to support different market requirements.
4LEDs SMD2835 Waterproof LED Module Quality Control Process
We apply strict quality inspection standards throughout production to ensure stable performance and reliable quality before shipment.















