Biro Circle Ring LED pendant light, controllable and dimmable via Casambi app The Biro Circle LED pendant light has a 10 cm high ring shade. LEDs have been installed all around behind an opal white plastic cover, emitting light downwards with rotationally symmetrical, deep-wide light distribution, whereby the opal plastic cover achieves optimum light distribution. The light is equipped with an electronic ballast with Casambi module. With the Casambi app, available free of charge for Android and IOs, the light can be smartly controlled and dimmed using a tablet, smartphone or even a smartwatch. - 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, Casambi dimmable