IP (Ingress Protection) code is a way to tell how well a device can resist things like water and dust. It helps you understand if a device is good to use outside or you should be careful with it.
It's like a code with two numbers, and each number tells you something different.
The first number tells you how well a device is protected against dust. There are numbers from 0 to 6. If a device has an "0" rating, it means it has no protection against dust, which is bad. If a device has a "6" rating, it means it is completely dust-tight, which is very good.
The second number tells you how well a device is protected against water. There are numbers from 0 to 8. If a device has a "0" rating, it means it has no protection against water, which is bad. If a device has an "8" rating, it means it can spend a long time under water, and it's still okay, which is very good.
So, when you see an IP code like "IP68," it means that the device has very good protection against both dust and water. And when you see an IP code like "IP00," it means that the device has no protection against either dust or water, which is not good.