LED office hanging light Biro Circle Ring 60 cm, direct/indirect light, height 10 cm, DALI The Biro Circle Ring LED hanging light is particularly suitable for offices, conference rooms etc.. Its lampshade has a ring shape and is fitted with LEDs all round, 70% of which emit light downwards and 30% upwards, optimally distributed through the opal white plastic covers. The filigree suspension with steel cables on the round canopy gives the light an almost floating effect - light emission 70 % downwards, 30 % upwards - 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