Kartell Goodnight Wall light Polished copper

CRI stands for Colour Rendering Index. It is a measure of how vividly colours are rendered in a room. A higher CRI value gives a more accurate rendering. Read more.

This value indicates the colour temperature of the light produced, expressed in Kelvin (K). The lower the Kelvin value, the warmer the light feels. In turn, a bulb with a higher Kelvin value gives a colder impression. For example, the warm white glow of an incandescent lamp has a Kelvin value of 2700K.

The specific type or hue of light emitted by a light source, such as a bulb or LED. Different light colour types can have varying effects on the appearance of objects and people in a given environment. For example, a warmer light colour type may create a cosy and inviting atmosphere, while a cooler light colour type may appear more clinical or energising. When selecting light bulbs or fixtures, be sure to consider the desired mood or ambiance you wish to create, as well as any functional requirements, such as task lighting or colour accuracy.

The IP rating is a standardised rating system that indicates the degree of protection the device provides against the ingress of solid objects (such as dust) and liquids (such as water). For example, an IP65-rated device has good protection against solids (IP6X) and is resistant to spray water (IPX5). The higher the IP rating, the better protected the device is. "Read more.

This tells you whether the manufacturer allows the product to be installed outdoors. Lighting for outdoor use has better resistance to elements such as rain, heat, UV or even corrosion. These fixtures always have a higher IP rating to prevent water damage.