Series: TRIONA square Decorative square LED surface-mounted luminaire. Flat, seamless frame: aluminium extrusion profile, powder coated. Cover made of sheet steel, powder-coated. Diffuser made of non-yellowing plastic (PMMA) microprismatic. LED backlight technology for homogeneous illumination of the entire light-emitting surface. Suitable for Ceiling mounting, Wall (surface). Very easy installation thanks to plug-and-play connector system. Driver integrated. With Casambi smart+free Bluetooth control for wireless network and operation using Android / iOS devices, free app available for download. Suitable for through-wiring. Colour: traffic white, matt (RAL 9016) Length: 567 mm Width: 567 mm Height: 88 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI): 80 System power: 28 W Rated luminous flux: 3750 lm Beam angle Down: 93° / 96° Luminous efficiency: 134 lm/W Control gear: Dimmable Bluetooth converter Protection class: I Type of protection: IP 20