What are IP66, IP67, and IP68? Understanding International Ingress Protection Certifications

    When purchasing electronic devices (such as mobile phones, walkie-talkies, and smartwatches), we often see markings like "IP66," "IP67," or "IP68." These numbers represent the product's dust and water resistance capabilities, based on IP rating standards established by the International Electrotechnical Commission (IEC). This article will explain the meaning of IP ratings in detail and teach you how to easily interpret them.

    I. What is an IP Rating?

    IP (Ingress Protection) ratings are a standard used to describe the dust and water resistance performance of equipment. It consists of two numbers:

    1. The first number: the dust resistance rating, ranging from 0 to 6.

    2. The second number: Waterproof rating, ranging from 0 to 9.

    The higher the number, the stronger the protection.

    ① IP Rating Dust Protection Specifications (First Number)

    Rating 1: No protection

    Rating 2: Protects against solids larger than 50mm

    Rating 3: Protects against solids larger than 12.5mm

    Rating 4: Protects against solids larger than 2.5mm

    Rating 5: Protects against solids larger than 1mm

    Rating 6: Protects against dust ingress, but not completely prevents dust accumulation

    ② IP Rating Water Protection Specifications (Second Number)

    Rating 0: No protection

    Rating 1: Protects against vertical water droplets (such as light rain)

    Rating 2: Protects against water droplets within a 15-degree angle

    Rating 3: Protects against water splashes within a 60-degree angle

    Rating 4: Protects against water splashes from all directions

    Rating 5: Protects against low-pressure water jets

    Rating 6: Protects against high-pressure water jets

    Rating 7: Water can pass through... Immersion in 1 meter depth for 30 minutes

    Rating 8: Can be continuously immersed in water at a depth of over 1 meter

    Laboratory test water is usually fresh water, excluding seawater, solvents, etc. This will be specifically stated in the standard explanation if applicable.

    II. How to interpret IP ratings?

    The numbers in IP ratings are read separately, for example, IP67:

    IP6X: Completely prevents dust ingress.

    IPX7: Can be immersed in 1 meter depth for 30 minutes.

    Therefore, IP67 equipment is both dustproof and waterproof, suitable for outdoor activities or short-term immersion environments.

    III. Common IP Rating Interpretation

    1. IP66:

    • Dustproof: Completely prevents dust ingress.

    • Waterproof: Withstands high-pressure water jets, suitable for rain or cleaning operations. 2. IP67:

    • Dustproof: Completely prevents dust from entering.

    • Waterproof: Can be submerged in 1 meter of water for 30 minutes, suitable for short-term underwater use.

    3. IP68:

    • Dustproof: Completely prevents dust from entering.

    • Waterproof: Can be used for extended periods in water deeper than 1 meter, suitable for diving or more demanding underwater environments.

    IV. Why are dustproof and waterproof ratings important?

    1. Outdoor use: Suitable for rainy and dusty environments, protecting equipment from damage.

    2. Professional use: In construction sites, industrial areas, and other environments, prevents dust or moisture from damaging equipment.

    3. Extended lifespan: Effectively improves equipment durability and reduces maintenance costs.

    V. Purchase Recommendations

    • For everyday use (such as rain or water splashes): Choose equipment with an IP66 rating or higher.

    • For outdoor activities (such as mountain climbing or diving): IP67 is a basic requirement, IP68 is better.

    Understanding IP ratings can help you choose more durable equipment that is better suited to your environmental needs.

    Remember, the higher the number, the stronger the protection. When choosing, be sure to select products that meet IP standards based on your actual needs!