The vandal-proof lamp with a power of up to 30 W is specially designed for lighting common areas (halls, corridors, elevators, stairs, terraces, etc.) with high traffic. Thanks to the IK10 impact resistance index, the lamp can withstand an impact equivalent to a 5 kg hammer falling from a height of 40 cm, and a hidden dismantling button will prevent unwanted attempts to remove it. Two power and color temperature options, the brightness of the glow can be adjusted according to TRIAC.
Some models are equipped with a motion sensor to optimize energy costs.

Dimensions: Ø400×65 mm
Color temperature: 3000/4000 K
Luminous flux: 2730–4050 lm
Beam angle: 110°
Color rendering index: CRI>80
Dust and moisture protection level: IP54
Power consumption: 21/30 W
Power supply: 230 V
Body color: white

https://arlight.ru/search/?q=CL-BOUWER-R400-30W 

who works in V-Ray version lower than 3.1 be careful, in materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you