The 10 W wall lamp is used for general and decorative lighting in areas with high humidity or outdoors. The flat compact housing is suitable for lighting in places where the dimensions of the fixture are important: on staircases, in corridors, and passages.
The bidirectional light output up/down creates a decorative effect, while the medium beam angle provides sufficient comfort lighting. The color temperature can be changed using a switch inside the housing.

Dimensions: 175×90×30 mm
Color temperature: 3000/4000/5700 K
Luminous flux: 963 lm
Beam angle: 75°
Color rendering index: CRI>85
Dust and moisture protection rating: IP65
Power consumption: 10 W
Power supply: 230 V
Housing color: white, black

https://arlight.ru/search/?q=SP-FLAT-S175x90-2x5W 

"Those working in V-Ray version lower than 3.1 should be careful, in the materials section BRDF is set to Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong, or Ward - whichever is preferable for you."