LED Strip IP Ratings is an internationally recognized standard used to measure the ability of electrical equipment enclosures to withstand the intrusion of solid foreign objects and water. This standard was established by the International Electrotechnical Commission (IEC 60529); the corresponding national standard in China is GB 4208-2017. An IP code consists of two characteristic digits: the first indicates the dust protection level (0–6), and the second indicates the water protection level (0–9K). Higher numbers signify stronger protection capabilities.
The IP rating is a key indicator of whether LED signage and light strip sources can effectively withstand complex outdoor environments. Advancing from one IP level to the next—ranging from the everyday waterproofing of IP65 to the long-term submersion capability of IP68—reflects iterative upgrades in materials and manufacturing processes.
In the fields of signage and linear lighting, Wilgex has developed a comprehensive portfolio of high-protection products spanning IP65 to IP68. These solutions offer precise protection tailored to various scenarios, ranging from standard dust and water resistance to extreme underwater lighting applications. When selecting light sources for signage or strips, accurately understanding IP ratings and choosing the appropriate level based on the actual operating environment is crucial for ensuring long-term, stable product performance.
Common Misconception: Many people mistakenly believe that IP67 is inherently superior to IP66. In reality, IP66 and IP67 represent different categories of protection: IP66 covers protection against powerful water jets, while IP67 covers protection against temporary immersion. Neither is simply “better” than the other; the choice depends on whether the specific application involves exposure to water jets or submersion in water. For instance, signage in coastal areas prone to typhoons requires the resistance to high-pressure water impact provided by IP66, rather than the immersion resistance of IP67.
In actual projects, the choice of IP rating should be based on the specific environment and requirements, while also balancing cost-effectiveness and product lifespan. So, how do we correctly select the right IP rating for a product?
IP65 is suitable for: standard outdoor signage and storefront signs, rooftop illuminated lettering, and bus stop billboards. It is ideal for scenarios where the lighting fixture is mounted at a height and exposed to rainfall but not prolonged submersion in water. All Wilgex LED modules for illuminated signage meet or exceed the IP65 protection rating, ensuring stable, reliable performance and a “like-new” appearance over long-term use.
IP66 is recommended for: seaside locations, coastal roads, bridges, signage systems in industrial zones, and outdoor facilities requiring frequent high-pressure water cleaning. For instance, building signage in coastal areas must account for saltwater corrosion; the IP66 rating offers a tighter, more secure seal.
IP67 is required for: areas prone to water accumulation—such as signage near water features, underpasses, and garage entrances—where heavy rain could cause occasional, short-term submersion.
IP68 is required for: underwater landscape lighting, fountain lighting, and outdoor settings exposed to prolonged heavy rain or high humidity. For example, Wilgex’s neon pool light strips utilize high-air-tightness fumed silicone from premium brands, a solid-core silicone extrusion process, and a fully sealed design; they are waterproof, moisture-proof, chlorine-resistant, corrosion-resistant, and UV/yellowing-resistant. Their ultra-high IP68 rating makes them suitable for underwater environments like swimming pools.
There is no absolute hierarchy of quality among IP65, IP66, IP67, and IP68 ratings; the key lies in “suitability.” There is no single “best” rating—only the “most appropriate” choice. The right choice balances cost and longevity; the wrong choice leads to wasted money at best, or frequent rework at worst. We recommend clearly defining the application environment before selecting the corresponding protection rating.
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