CRI stands for Colour Rendering Index. It is a measurement of how well a light source can render the true colour of an object compared to natural light.
Rated out of 100, with an open flame or sunlight being a perfect 100. A light with 90 CRI and above would be classed as having high CRI, while 80 CRI is the standard for LEDs.
Fire-rated downlights are engineered to maintain a ceiling's fire resistance, safeguarding against the spread of fire through openings needed for these recessed light fittings. More info here.
