I came across Auro through a letter from a reader. It’s a new E27 bulb that can also be linked to the Philips Hue Bridge thanks to the Zigbee standard. The makers promise: “Auro brings light into your home that corresponds to your natural biorhythm.”
Particularly impressive is the very high color rendering index of 95, which puts everything from Philips Hue in the shade. With normal Hue lamps, the CRI is usually around 80, so Auro is actually operating in completely different regions here. But how is this noticeable in practice?
The Color Rendering Index describes the reproduction of colors from an object that is illuminated by a light source. The reference is sunlight with a color rendering index of 100 – the closer you get to this value, the more comfortable the light is.
Auro Light can shine warmer than Philips Hue
“We have set ourselves the task of developing a smart LED light that combines the highest quality of light with state-of-the-art technology,” says the Auro team. “We rely on high-quality materials and innovative production processes to ensure exceptional color fidelity and a long service life.”
The other properties of the Auro E27 light source also make for very good reading. The maximum brightness at 2,700 Kelvin is 850 lumens, which is roughly on a par with the White Ambiance bulbs from Philips Hue. The color temperature can be set from 1,800 to 2,700 Kelvin, making very warm white tones possible – even warmer than with Philips Hue.
However, there are currently two problems: The Auro bulb, which incidentally is supposed to cost 44 euros, cannot currently be ordered on the supplier’s website (Update: In the meantime, the website has been reduced to a minimum and July 2025 has been set as the start date). In addition, any attempts to contact them via email addresses that I have been able to find on the website or in the source code have come to nothing. Perhaps this article will draw the team’s attention to my request – I am always happy to receive an e-mail from you.
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Available July 2025, on their site………
The website looked completely different on Monday.
It has now been radically reduced.