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257I
Colour
Technical Data
last update: 25/05/2026Description
Decorative ceiling light consisting of a base, optical compartment, and PMMA diffuser screen. The optical compartment is made of aluminum alloy and subjected to multi-step pretreatment processes, the main phases of which are degreasing, fluorozirconation (surface protective layer) and sealing (silane nanostructured layer). The subsequent painting phase is carried out with primer and liquid acrylic paint, baked at 150 °C, which guarantees high resistance to atmospheric agents and UV rays.The diffuser screen is made of triple-injection molded PMMA and can be installed on the optical compartment using a bayonet system. Complete with Warm White monochromatic LED optical circuit with Opti Beam Reflector optical system.The product is supplied with a DALI-2 driver and is equipped with a double cable gland (PG), which allows through wiring. All external screws used are made of A2 stainless steel.
Dimensions
Diameter (mm)
ø163
Technical performance
Complies with EN60598-1 and pertinent regulations
Physical properties
Material
Aluminium and technopolymer
Photometric data
Details
lm system
881.4
W system
10.4
lm source
1130
W source
8.8
Luminous efficiency - lm/W (system value)
84.75
lm in emergency mode
-
Maximum intensity (cd)
1953
Total light flux at or above an angle of 90° (Lm)
4
Light output ratio (LOR)
78
Optic and beam angle
F - Flood 42°
Adjustability
fixed
Light colour quality
CRI 82 - Rf (Colour Fidelity Index) 85 - Rg (Gamut Index) 95
Colour temperature
2700 K
MacAdam Step
2
Charts and polar curves
Electrical data
Operating ambient temperature range
from -20°C to +35°C. (*)
ZVEI code
LED
Power Supply
Electronic Power supply included
Mounting options
Integral
Control
DALI-2
Installation
Description
Mounting
Ceiling surface