Decorative square LED surface-mounted luminaire. Base: pressure die-cast aluminium, powder-coated. Standard Gore™ Protective Vents diaphragm valve to avoid condensation. The large connection compartment on the back for convenient connections is also ideal for through wiring. Diffuser: matt crystal glass, painted inside, with fixing device. Diffuser with frame made of pressure die-cast aluminium, powder coated, bonded. Diffuser attached with clip system. Homogeneous and smooth light distribution. Suitable for Ceiling mounting, Wall (surface). Very easy installation thanks to plug & play connection. Base fixing slots outside of gasketed area, drill hole deviations can be compensated. MultiLumen: 2 steps adjustable luminous flux. MultiColour: Colour temperature adjustable via jumper. No factory pre-settings, colour temperature must be set during installation. With Casambi smart+free Bluetooth® control for wireless network and operation using Android / iOS devices, free app available for download. Series: FLAT SLIM square Reference Number: 312537.0031.730 Colour: anthracite metallic (DB703) Length: 300 mm Width: 300 mm Height: 67 mm Weight: 4.23 kg Lamp: LED Socket: Plug Colour temperature: 3000K, 4000K Colour rendering index (CRI): 80 Rated life: 50000 h (L80/B10) System power: 21 W Rated luminous flux: 2400 lm Beam angle Down: 122° Glare evaluation RUG (4H 8H): 23 Luminous efficiency: 114 lm/W System power 2: 21 W Rated luminous flux 2: 2250 lm Beam angle Down 2: 122° Glare evaluation RUG (4H 8H) 2: 22.8 Luminous efficiency 2: 107 lm/W System power 3: 13 W Rated luminous flux 3: 1450 lm Beam angle Down 3: 121° Glare evaluation RUG (4H 8H) 3: 21.1 Luminous efficiency 3: 112 lm/W System power 4: 13 W Rated luminous flux 4: 1350 lm Beam angle Down 4: 121° Glare evaluation RUG (4H 8H) 4: 20.9 Luminous efficiency 4: 104 lm/W Light outlet: direct Light sharing: symmetrical Control gear: Dimmable Bluetooth converter Voltage: 220 - 240 V / 50 Hz, 60 Hz Power factor: 0.95 Protection class: I Luminaires on B10A fuse: 31 Luminaires on B16A fuse: 50 Luminaires on C10A fuse: 52 Luminaires on C16A fuse: 85 Inrush current / Inrush current duration: 5 A / 50 µs Type of protection: IP 40 Ambient temperature: -20 °C to + 35 °C Impact resistance: IK07 Filament test: 960°C - 30 seconds Conformity mark: CE, EAC