Must-Read Before Buying an LED Signboard! IP65 Waterproof Rating Explained — How to Choose a Durable Outdoor LED Signboard

In Malaysia, almost every business owner shopping for an outdoor LED signboard will eventually hear this question from a salesperson:

“Do you need an IP65 waterproof rating?”

And many will pause and wonder —

“What exactly is IP65? Does it really have to do with waterproofing and dust protection? Is a higher rating always better?”

In fact, IP65 is one of the key standards that determine whether an outdoor LED  signboard can perform reliably under rain, heat, and humidity. Choosing the wrong protection level can lead to water leakage, short circuits, oxidation, dimming, or premature failure, which not only affects your brand image but also increases long-term maintenance costs.

In this article, we’ll walk you through what the IP (Ingress Protection) rating really means and explain how, under Malaysia’s tropical weather, you can choose the most durable, waterproof, and cost-effective LED signboard configuration for your business.
 

1. What Is an IP Rating?

When you’re choosing an outdoor LED signboard, you’ll often see codes like “IP65” or “IP67.” These aren’t product models — they represent an international protection standard known as the Ingress Protection (IP) rating.

The IP rating, established by the International Electrotechnical Commission (IEC), defines how well a device or product is protected against dust, water, and moisture entering its internal components.

The format is simple: IP + two digits, such as IP54, IP65, IP67, or IP68. Each digit has a specific meaning:

The first digit indicates the dust protection level.

The second digit shows the waterproof protection level.

In simple terms:

IP65 means “completely dust-tight and resistant to powerful water jets.”

This makes it ideal for Malaysia’s hot, humid, and rainy climate, ensuring your outdoor LED signboard stays bright and functional all year round.
 

2. Common Waterproof Ratings and Their Recommended Applications

The table below lists several of the most common IP (Ingress Protection) ratings, helping you determine which level of protection is best suited for your LED signboard or outdoor advertising display based on your environment.

 3. Why Is IP65 Recommended for Outdoor LED Signboards?

In Malaysia’s hot, humid, and rainy tropical climate, an insufficient waterproof rating can easily damage LED modules, transformers, or power supplies.

Here are some of the most common problems caused by poor protection:

Water leakage or short circuit → some LED sections stop lighting up

Power oxidation or burnout → flickering, intermittent outages, or total failure

Dust and moisture buildup → yellowing surfaces, reduced brightness, and shorter lifespan
 

Advantages of IP65 Protection

• Completely dustproof — prevents dirt and small particles from entering the light housing
• Water-jet resistant — withstands heavy rain or water splashes from any direction
• Moisture-resistant — protects internal wiring and circuits from humidity
• Weatherproof for Malaysia — designed to perform reliably in tropical heat, heavy rainfall, and coastal conditions

In short:

IP65 offers the most balanced and reliable level of outdoor protection — combining durability, waterproof performance, and long-term lifespan for LED signboards in Malaysia.
 

 4. Beyond Waterproofing — Why Weather Resistance Matters

Waterproof doesn’t always mean durable. Many people assume that as long as an LED signboard is waterproof, it’s good enough for outdoor use — but in reality, weather resistance is just as important.

In Malaysia’s climate — where UV exposure is intense, humidity is high, and temperature changes are frequent — your LED signboard needs to be built for more than just rain protection.

To stay bright and long-lasting, it should include these three essential weather-resistant features:

 UV Protection – prevents acrylic panels and plastic covers from aging or turning yellow

 Temperature Resistance – avoids expansion, warping, or cracking from heat and cold

Dust & Wind Resistance – reduces corrosion, rust, and structural loosening over time
 

 Professional Tips for Better Outdoor Durability

Use UV-resistant acrylic panels and aluminum frames – they prevent discoloration and deformation under strong sunlight.

Choose LED modules with IP65 waterproof rating and UV-protective coating – ideal for Malaysia’s humid, hot weather.

Add waterproof covers and silicone seals to protect power supplies and junction boxes from moisture.

For coastal installations, apply an anti-corrosion (salt-spray resistant) coating to prevent rust and extend the signboard’s lifespan.
 

5. How to Check If Your LED Signboard Meets IP65 Standards

Want to make sure your LED signboard is truly IP65 waterproof-certified? Here are a few quick ways to verify it:

Check the label – The LED module or power supply should clearly state “IP65” on its specification label.

Inspect the wiring – Look for waterproof sealant or silicone rings around cable joints and connections.

Examine the structure – The back panel of the sign or lightbox should be fully enclosed and moisture-proof.

Ask for proof – Reliable manufacturers will provide waterproof test videos, certificates, or warranty documents to verify compliance.

Pro Tip:

In Malaysia’s rainy and humid climate, combining IP65 waterproof protection with UV-resistant materials is the ultimate formula for long-lasting outdoor LED signboards.
 

Summary: Choosing the Right IP Rating Makes Your LED Signboard Last Longer

When selecting an LED signboard, choosing the right IP (Ingress Protection) waterproof and dustproof rating can significantly extend its lifespan. Here’s a quick guide to the recommended protection levels for different environments

Remember:

Investing in a high-quality, waterproof, and weather-resistant LED signboard isn’t just about brighter lights — it’s about longer-lasting performance.

Don’t risk future repairs or replacements just to save a few hundred ringgit on a low-grade sign.

FAQ

1. If my signboard is installed indoors near a window, do I still need IP65?

If your signboard is placed near a window, glass door, or air conditioner outlet where moisture is present, it’s still recommended to choose at least IP54. While it doesn’t need full rain protection, having moisture and dust resistance helps prevent LED oxidation, discoloration, and early damage.
 

2. Can an IP65 LED signboard save electricity?

Yes, it can. A high waterproof rating helps maintain a stable operating temperature, which improves energy efficiency and reduces light decay. Compared to traditional neon or lower-grade LED strips, an IP65 LED signboard can save around 30–40% in energy consumption — making it more cost-effective in the long run.
 

3. Does the waterproof rating of an LED signboard decrease over time?

Yes. After long exposure to sun, rain, and humidity, the silicone seals and outer casing may age or oxidize, reducing their waterproof performance. It’s recommended to perform a waterproof inspection or replace sealing strips every two years to keep your signboard in good condition.
 

4. Does color temperature (white, warm white) affect weather resistance?

Not directly. However, different LED chip materials have varying heat resistance.

Generally, neutral white (4000–5000K) performs best outdoors — it maintains brightness well and resists color fading under the sun.
 

5. Can IP65 LED signboards be used on mobile vehicles or food trucks?

Yes, but with precautions. For moving vehicles or food trucks, it’s best to use a DC 12V / 24V power system and install a vibration-proof mounting bracket. Because mobile setups are more exposed to vibration and water splashes, an IP66 LED module is an even better choice for extra durability.
 

Want to Know If Your Signboard Meets the Right Waterproof Standard?

Get in touch with Great Sign Advertising (M) Sdn Bhd today!

We offer:

Free on-site inspection and consultation

Waterproof rating verification reports

LED module replacement and upgrade solutions

WhatsApp us now to find out how we can help your LED signboard shine bright — rain or shine!