Brumberg BIRO CIRCLE 13857179CA. LED pendant ring luminaire, direct/indirect, dimmable, Round.Luminaire diameter 1800.0 mm, Hight 50.0 mm, for pendulum mounting. Pendulum length max. 5000.0 mm Weight 13.5 kg, with rotattionssymmetrical, deep, wide distributed light intensity. Cover plastic, opal, Luminous flux 31.816 lm, Power 1 x 228 W, Light colour warm white to daylight white, Correlated color temprature (CCT) 2.700 - 6.500 K, Colour rendering index CRI > 80, Rated life time L70/B50 at 25 °C: 276.000 h, Rated life time L80/B20 at 25 °C: 183.000 h, Housing material: Aluminium / Steel / Plastic, Colour: White structure, Permissible ambient temperature (ta): -20 °C - +25 °C, Protection class (EN 61140): I, Degree of protection (DIN EN 60529): IP20. With electronic driver, Casambi dimmable. BRUMBERG article number:13857179CA, GTIN:4251433968818