How to Choose the Right LED Module Based on Sign Depth
Selecting the right LED sign module is one of the most important factors in achieving bright, uniform, and energy-efficient signage. The internal depth of your channel letters or light box determines how light is distributed. Choosing a module designed for the correct sign depth helps eliminate hotspots, reduces power consumption, lowers installation costs, and extends the lifespan of your signage.
Which LED Module Is Best for 30–60 mm Signs?
Answer
For shallow channel letters and slim light boxes with a depth of 30–60 mm, we recommend our 3016 LED Module. This module is specifically designed for short lighting distances and features an ultra-wide 175° optical lens, allowing light to spread over a larger area and produce smooth, uniform illumination. The module is also IP67 waterproof, making it suitable for both indoor and outdoor signage applications.
Ideal Applications
·Thin channel letters
·Indoor & outdoor illuminated signs
·Acrylic light boxes
·Retail shop signs
Benefits
·175° wide beam angle for better light diffusion
·Excellent lighting uniformity
·Reduced hotspot effect
·Lower power consumption
·IP67 waterproof design
·Fast and easy installation
Recommended Product
12V LED Module Signage IP67 High Brightness LED Sign Module – Cool White for Slim Channel Letters (AU Warehouse)
Which LED Module Is Best for 60–120 mm Signs?
Answer
A sign depth of 60–120 mm is the most common specification for commercial channel letters and light boxes.
The objective is to achieve maximum lighting uniformity using fewer LED modules, which reduces material costs, installation time, and overall power consumption.
Our 7016 LED Module combines 180 lm/W high-efficiency LEDs with a 175° optical lens, allowing installers to achieve excellent brightness while using fewer modules per sign.
Ideal Applications
·Standard channel letters
·Indoor & outdoor illuminated signage
·Acrylic light boxes
·Retail and commercial signs
Benefits
·High luminous efficiency (180 lm/W)
·Fewer modules required
·Lower installation costs
·Lower power consumption
·Excellent lighting uniformity
·Reduced hotspots
Recommended Product
24V LED Sign Module IP68 Waterproof 1.2W Cool White Channel Letter & Advertising Sign LED Lighting (AU Stock)
Which LED Module Is Best for 120–200 mm Signs?
Answer
For large channel letters and deep light boxes with a depth of 120–200 mm, brightness, heat dissipation, and long-term reliability become increasingly important.
These signs are commonly installed on building rooftops, highways, bridges, shopping centres, and large commercial projects where maintenance costs are high.
Our 6W High Power LED Module uses 1W LEDs (6W per module) and an all-aluminium housing for superior heat dissipation and long service life. At a sign depth of approximately 150 mm, we recommend installing 9 modules per square metre, with an average power consumption of only 54 W/m², providing excellent brightness while keeping operating costs low.
Ideal Applications
·Large channel letters
·Deep light boxes
·Building signage
·Highway signs
·Bridge signs
·Shopping centre signs
Benefits
·High brightness output
·Excellent heat dissipation
·Long service life
·Lower maintenance costs
·Fewer modules required
·Low power consumption per square metre
·Uniform illumination without hotspots
Recommended Product
Frequently Asked Questions
Can I use the same LED module for every sign depth?
No.
Different sign depths require different optical designs. Using a module intended for shallow signs inside a deep light box may result in insufficient brightness. Conversely, installing a high-output module inside a shallow sign may create visible hotspots and uneven illumination.
Why does sign depth matter?
Sign depth determines how light spreads inside the channel letter or light box. Selecting the correct LED module ensures uniform illumination, improves energy efficiency, and reduces installation and maintenance costs.
How do I know which LED module I need?
Measure the internal depth of your channel letter or light box before selecting a module.
If you are unsure which module is best for your project, our technical team can recommend the ideal solution based on your sign depth, acrylic thickness, installation environment, and brightness requirements.
Expert Tip: Selecting an LED module based on sign depth is more effective than simply choosing a higher wattage. A well-designed optical lens and proper beam angle often deliver better lighting performance while reducing the number of modules required.
LED Knowledge
How to Choose the Right LED Module Based on Sign Depth 
04 5984 4358 
