The IP code indicates the level of protection of a luminaire from dust and water. It usually consists of two digits; the first expresses resistance to solid objects and dust, and the second expresses resistance to water.
For example, IP20 is suitable for dry indoor use, while IP44 offers better splash protection. Ratings like IP65 and IP66 are suitable for outdoor use because they withstand dust and rain to a higher degree.
The choice of protection degree depends on the installation location, so it is not preferable to use an indoor unit in the garden or facade even if its shape is suitable.
It is important to read the IP rating before purchasing, especially for bathrooms, entrances, facades, and gardens.