LED strip light 3528, What does the word “IP” mean in Lighting Industry?

1. 3528 LED Strip Light in IP00
What does the word “IP” mean in Lighting Industry?
It stands for “INGRESS PROTECTION”, which was draught by IEC （ INTERNATIONAL
ELECTROTECHNICAL COMMISSION ） . An IP number is used to classify the
environmental protection of solid objects and liquids around electronic equipment.
The IP number is made of two numbers, the first referring to the protection against solid
objects and the second against liquids. The higher the number, the better the protection.
We often see the different IP ratings in LED strip lights, such as IP00, IP65, IP66, IP67
and IP68.
In the above picture, it is a 3528 LED strip light without any cover on the LED tape. So it
is obviously that the IP rating is IP00. The “00” means No protection against both solid
objects and liquids.