LED office pendant light Biro Circle Ring, height 10 cm, direct/indirect, DALI, CCT function Biro Circle Ring is an LED pendant light that is particularly suitable for use in offices, conference rooms etc. Its ring-shaped shade is fitted with LEDs all round. Its ring-shaped lampshade is fitted with LEDs all round, which emit 70% of their light downwards and 30% upwards through the opal white plastic covers. The light is dimmable via DALI and the CCT function allows the light colour to be adjusted from warm white to daylight white. Thanks to the simple, filigree suspension with round canopy and steel cables, the ring-shaped lampshade appears to almost float in the room - with rotationally symmetrical deep-wide beam light distribution - opal white plastic covers - general colour rendering index CRI > 80 - service life L70/B50 at 25 °C: 276.000 h, service life L80/B20 at 25 °C: 153,000 h - housing material: aluminium / steel / plastic - permissible ambient temperature (ta): -20 °C - +25 °C - with electronic ballast, DALI dimmable and CCT function