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IP67 vs IP68: Which Camera Module Standard Is Better?
Created on 01.15
When it comes to choosing a camera module for outdoor, industrial, or harsh environment applications, the IP rating is often a make-or-break factor. Among the most sought-after ratings are IP67 and IP68, both representing high levels of protection against dust and water. But here’s the truth: higher numbers don’t always mean better. The "better" standard depends entirely on your specific use case, budget, and long-term operational needs. In this guide, we’ll go beyond basic numerical comparisons to unpack the real-world differences between IP67 and IP68camera modules, helping you make an informed decision aligned with your project goals.
First: Understanding the IP Rating System
Before diving into the specifics of IP67 and IP68, let's clarify what the IP rating actually means. Defined by the international standard IEC 60529 (also known as EN 60529), the Ingress Protection (IP) rating is a two-digit code that quantifies a device's resistance to solid particles (first digit) and liquid ingress (second digit). The higher each digit, the stronger the protection.
For both IP67 and IP68, the first digit is "6"—the highest possible rating for dust protection. This means both camera modules are completely dust-tight: no dust particles can penetrate the enclosure, preventing long-term damage to internal components such as image sensors and circuit boards. The key difference lies in the second digit, which measures water resistance. Let's break that down.
IP67 vs IP68: Core Differences in Water Resistance
While both ratings offer robust water protection, their capabilities and test criteria are distinctly different. Understanding these nuances is critical, as misinterpreting the rating can lead to costly equipment failures or unnecessary overspending.
What Does IP67 Mean for Camera Modules?
An IP67 rating means the camera module can withstand temporary immersion in water. The official test standard specifies submersion in 1 meter of water for up to 30 minutes. This rating is not designed for prolonged underwater use but rather to handle accidental submersion or extreme weather events such as heavy rain, flash floods, or splashing from high-pressure water sources.
For example, an IP67 camera module installed in a parking lot would easily survive a torrential downpour or even a brief flood that submerges it for less than 30 minutes. It is also suitable for industrial environments where occasional water exposure—such as washdowns with low-pressure hoses—is common.
What Does IP68 Mean for Camera Modules?
IP68 takes water resistance a step further—but with an important caveat: the exact test conditions are manufacturer-specific (within the framework of IEC 60529). Generally, IP68 camera modules are rated for continuous submersion in water deeper than 1 meter for extended periods. Some manufacturers specify 2 meters for 1 hour, while others may rate their modules for 5 meters or more for 24 hours.
Unlike IP67, IP68 is designed for intentional or unavoidable prolonged underwater use. Think of camera modules used in marine environments (e.g., underwater surveillance in harbors or fish farms), water treatment facilities, or outdoor locations prone to long-term flooding.
Key Test Differences You Need to Know
The testing process for IP67 and IP68 highlights their distinct use cases:
IP67 Testing: Conducted in a controlled environment with 1 meter of static water for 30 minutes. No water ingress is allowed, and the module must function normally after testing.
IP68 Testing: Involves submersion in deeper water (specified by the manufacturer) with controlled pressure to simulate real-world conditions. The testing duration is longer, often 1 hour or more, and the module must maintain full functionality after the test. Some tests also include thermal shock (temperature variations) to mimic harsh environmental changes.
Beyond Ratings: The Hidden Factors That Impact Performance
Many buyers make the mistake of focusing solely on the IP rating, but two often-overlooked factors have a greater impact on long-term reliability: sealing design and installation quality.
Sealing Design: Not All IP Ratings Are Created Equal
IP67 and IP68 ratings are only as good as their sealing materials and design. High-quality camera modules use durable gaskets (e.g., silicone or EPDM) and precision welding to create a tight seal. Cheaper modules may cut corners, leading to premature seal failure—even if they are rated IP68.
For example, a low-cost IP68 module with a thin gasket might fail after repeated exposure to temperature fluctuations, while a premium IP67 module with robust sealing could outperform it in harsh, humid environments. Always check the manufacturer’s testing protocols and material specifications, not just the IP number.
Installation: The Weakest Link in Water Protection
Even the highest IP-rated camera module will fail if installed incorrectly. Cable connectors, mounting brackets, and junction boxes are common entry points for water. For instance, using a non-waterproof connector with an IP68 camera module will allow water to seep in through the cable, rendering the module’s rating useless.
Best practices include using waterproof cable glands, sealing all entry points with marine-grade sealant, and mounting the module to prevent water pooling on the enclosure. In many cases, proper installation is more critical than choosing between IP67 and IP68.
IP67 vs IP68: Which Is Right for Your Use Case?
The "better" standard depends on where and how you will use the camera module. Below are common scenarios to help you decide:
Choose IP67 If:
Your application involves temporary water exposure: This includes outdoor security cameras (parking lots, building perimeters), construction site cameras, or agricultural equipment cameras. These environments face rain, splashing, or occasional brief submersion but not prolonged underwater use.
Cost is a consideration: IP67 modules are typically more affordable than IP68 modules, as they require less complex sealing and testing. If IP67 meets your needs, there is no need to pay a premium for IP68.
Weight and size matter: IP68 modules often have thicker enclosures and heavier sealing components, which can be a drawback for applications where space or weight is limited (e.g., drones or small IoT devices).
Choose IP68 If:
Your application requires prolonged underwater use: This includes underwater surveillance (harbors, reservoirs, fish farms), water treatment plant cameras, or cameras installed in areas prone to long-term flooding (e.g., coastal regions or floodplains).
You need extra durability for extreme conditions: IP68 modules are built to withstand harsher environments, including high pressure, thermal shock, and prolonged humidity. They are ideal for industrial applications where equipment is exposed to aggressive cleaning (high-pressure, high-temperature water jets) or harsh chemicals.
Reliability is non-negotiable: For mission-critical applications (e.g., public safety cameras in flood zones or marine research equipment), the extra protection of IP68 provides peace of mind. Even if the module is not submerged long-term, the robust sealing reduces the risk of water ingress over time.
Cost Comparison: IP67 vs IP68
Cost is a practical factor that cannot be ignored. On average, IP68 camera modules cost 20-50% more than IP67 modules of similar quality. This price difference stems from:
More expensive materials (thicker aluminum or stainless steel enclosures, high-grade gaskets).
• Complex testing processes (prolonged submersion, high-pressure testing, thermal shock testing).
• Precision manufacturing requirements (tighter tolerances to ensure a leak-proof seal).
For large-scale projects (e.g., installing 50+ security cameras across a campus), choosing IP67 over IP68 can result in significant cost savings without compromising performance—provided the environment does not require prolonged submersion.
Common Myths About IP67 and IP68 Debunked
Let’s dispel some of the most common misconceptions about these ratings to help you make a more informed decision:
Myth 1: IP68 is "indestructible" underwater
False. IP68 ratings have limits—specifically, the depth and duration specified by the manufacturer. A module rated for 2 meters of water for 1 hour will fail if submerged in 5 meters of water or left underwater for 24 hours. Always check the manufacturer’s specifications, not just the IP number.
Myth 2: IP67 and IP68 protect against all liquids
False. The IP rating only applies to fresh water. Saltwater, chemicals, or acidic liquids can corrode the enclosure and break down sealing materials—even in IP68 modules. For marine or industrial environments with corrosive liquids, look for additional certifications (e.g., saltwater resistance or chemical resistance).
Myth 3: A higher IP rating means better overall quality
False. The IP rating only measures dust and water resistance, not other factors such as image quality, low-light performance, or durability against physical impact. A low-quality IP68 module may have poor image sensors or weak construction, while a high-quality IP67 module could outperform it in every other way.
Conclusion: It’s About Fit, Not Perfection
So, which is better: IP67 or IP68? The answer is simple: whichever fits your specific use case. IP68 offers superior water resistance for prolonged underwater use but comes with a higher cost and may be overkill for many applications. IP67 provides excellent protection for most outdoor and industrial environments at a more affordable price.
When choosing a camera module, follow these steps:
Assess your environment: Will the module face temporary water exposure or prolonged submersion?
Evaluate your budget: Can you justify the premium for IP68, or does IP67 meet your needs?
Check manufacturer specifications: Look beyond the IP rating to sealing materials, testing protocols, and additional certifications.
Prioritize installation: Ensure proper mounting and waterproofing of connectors to maximize reliability.
By focusing on fit rather than chasing the highest rating, you will get a camera module that performs reliably, lasts longer, and provides the best value for your investment.
Have questions about choosing the right IP-rated camera module for your project? Leave a comment below, and our team will help you find the perfect solution.
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