Katrin ceiling light can be used indoors and outdoors thanks to the ip44 protection ratingkatrin proves itself as an optimal light source for places other than the bathroom it is equipped with an ip44 protection rating against spraying water and thus can be used in other damp rooms like a staircase or cellar the round opal glass shines bright light for a good general light but the matte nickel edge makes katrin a highlight in the room the bayonet connection makes changing the bulb very ea