IP65 vs IP66: Which IP Rating Is Right for You

Digital signage is widely used in outdoor environments, and the IP rating is a key factor in determining whether the product can operate reliably under harsh conditions. This standard is not only essential for advertising displays but also for streetlights, industrial equipment, and other applications. Common ratings include IP65, IP66, IP67, and even IP68. But what exactly do these ratings mean, and which one is the right choice for you? In this article, we'll break down the definition and

features of each rating to help you fully understand their core advantages.

Basic Definition of IP Ratings

Before diving deeper, let’s first understand the basic concept of IP protection. Taking digital signage as an example, IP (Ingress Protection) is a standard defined bythe

International Electrotechnical Commission ‍ (IEC) that measures the ability of a device’s enclosure to resist the intrusion of solids (such as dust and foreign

objects) and liquids (such as water and moisture). The difference between ratings lies mainly in the two digits that follow.
A complete IP rating consists of "IP + two digits." The first digit indicates the dust protection level (ranging from 0 to 6), with 6 being the highest. The second

digit represents the water protection level (ranging from 0 to 9), where higher numbers indicate stronger water resistance.

What Does IP65 Mean?

As explained earlier, the two digits following "IP" define the level of protection. In the case of IP65, it represents a high standard of dust and water resistance.

The first digit "6" indicates the highest level of dust protection, meaning the device is completely sealed against dust and fine particles in outdoor environments.

The second digit "5" shows that the device can withstand water jets delivering 12.5 liters per minute—equivalent to pouring about 25 half-liter water bottles in a

single minute—tested from different angles with low-pressure streams. In simple terms, the device will not be damaged under such water exposure. However,

it is not designed to endure high-pressure jets or immersion in water. IP65 is therefore commonly used for indoor and semi-outdoor products.

What Does IP66 Mean?

Compared with IP65, IP66 offers the same highest-level dust protection, but with enhanced water resistance. According to testing, IP66 can withstand powerful

water jets of up to 100 liters per minute—equivalent to pouring 200 half-liter water bottles in just one minute.This means that even under extreme

outdoor conditions, such as heavy rainstorms or strong winds, the device can continue tooperate normally. IP66 is commonly used in agricultural machinery, industrial equipment,and certain types of outdoor digital signage. However, unlike IP67 or IP68, it does not provide protection against immersion in water, making it unsuitable for underwater

environments.

Main Application Scenarios of IP65 vs. IP66

The key difference between IP65 and IP66 lies in their water resistance, which directly leads to variations in their application scenarios. Below is a brief overview:

Key Application Scenarios of IP65

• Outdoor Lighting:

  Common in streetlights, garden lights, and courtyard lights. These fixtures are often exposed to rain and wind for long periods, and IP65 ensuresreliable performance and extended

  service life.lens or inside the device, which could otherwise cause malfunctions over time.

• Digital Signage:   

  Some outdoor digital signage products, such as outdoor battery digital poste‍r‍, outdoor advertising displays, and semi-outdoor units, also adopt IP65 to

  meet the needs of general outdoor environments.

  

Key Application Scenarios of IP66.

• Industrial Environments:

  Such as chemical plants, construction sites, and production areas in food and beverage factories. These environments typically generate

  large amounts of dust, and equipment often requires cleaning with high-pressure water jets. Only devices with IP66 or higher protection can withstand such conditions.

• Transportation Hubs:

  Including train platforms, airport aprons, and bus stations. These locations are constantly exposed to heavy rain and harsh weather, which demands stricter waterproof performance.

Which IP Rating Does Digital Signage Need?

The required IP rating mainly depends on your installation environment. In general, digital signage is available with IP65 and IP66 protection levels.

● If your signage will be installed outdoors year-round, exposed to dust, rain, wind, or even extreme weather such as thunderstorms, there is a higher risk of liquid

or debris entering the device. In such cases, IP66 is recommended. This level is typically used for fully enclosed outdoor kiosks and outdoor advertising displays.

● IP65, on the other hand, is more suitable for semi-outdoor or indoor environments, such as outdoor battery kiosks or double-sided hanging displays.‍

When choosing the IP rating for digital signage, it is important to consider the installation location and the most extreme weather or environmental conditions it may face.

Limited budget and mild conditions: IP65 is a cost-effective choice, suitable for general indoor or semi-outdoor environments.

Conclusion

Choosing the right IP rating requires careful consideration of multiple factors. If you still have questions after reading this article, feel free to contact us.

With 17 yearsdigital signage manufacturing, we offer LCD advertising displays with IP65 and IP66 protection. We can help you select the most suitable

digital signage solution based on your specific needs. Click here ‍to contact us now