Square LED surface-mounted luminaire in IP50 with opal cover. Luminaire power: 18.4 W, DALI controllable luminaire with LED converter. LED service life 50,000 hours until a luminous flux drop to 90% of the initial value. Color tolerance (initial MacAdam): 3. Luminaire luminous flux: 2140 lm, luminaire luminous efficacy: 116 lm/W. Color rendering Ra > 80, color temperature 3000 K. Despite the highest quality controls, the defined narrow binning can lead to noticeable color differences between the luminaires when used in a cluster. In order to achieve a homogeneous appearance despite this, it is recommended to consult a lighting consultant if you intend to install in a cluster. Integrated LED module ESD protection. Housing made of white plastic, injection-molded cover made of opal polymethyl methacrylate with impact resistance: IK03. High-quality, all-round, foamed, hydrophobic polyurethane seal, installation using the slotted discs provided. Permissible ambient temperature: -20°C to +25°C. Luminaire wired halogen-free. Note: If used in chemically contaminated ambient atmospheres or outdoors, please consult your consultant. Dimensions: 310 x 310 x 90 mm, weight: 1.9 kg.