from € 422.15
LIINU 2 meter Pendant CCT adjustable, UP and down light, White
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SKU#: 2-meter-Pendant-CCT-UD-W
Complete 2 meter long white hanging led luminaire. Temperature adjustable (CCT) light up and down. Package includes transformer for desired system and optional wireless dimmer/colour temperature control button.
- 2 metre prefabricated luminaire
- Choice of RF, Zigbee or DALI
- Effective for lighting and mood creation
- incl. suspension straps
- Light up and down
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from € 329.94
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- Brand Ledstore
- Breadcrumbs Home Led LightsDecorative Led LightsLED suspended ceiling lights LIINU 2 meter Pendant CCT adjustable, UP and down light, White
- Category LED suspended ceiling lights
- SKU 2-meter-Pendant-CCT-UD-W
- Lumen 2800
- Photograph from No
- Wireless No
- Direction No
- Transformer type No
- Profile type No
- Accessories No
- Polymium strain No
- Change Dimming and colour temperature control using RF signal
- Size Profile: 18x16x2000mm
- Wattage 48
- Light control 176
- Colour rendering (CRI ±3) 90
- IP class IP21
- Colour White
- Adjustability Not adjustable
- Chainable No
- Guarantee (year) 3 years
- Life span 35.0000h
- Installation method No
- Format No
- Installation level No
- Approval CE, RoHs, IP21, SELV
- Designed in Finland No
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WHAT IS CRI, THE COLOUR RENDERING INDEX
High quality LED lights also have a high colour rendering index, or CRI. A good colour rendering index (CRI) for home use is above 90, and nowadays many market lights are unfortunately closer to 80.
CRI tells you how well an LED light displays colours as they should be. For designers and architects, as well as interior designers, it should be one of the most important considerations. Make sure the lighting is perfect so that your artwork is what it is meant to be.
Colour rendering index
The colour rendering index is expressed as a number on a scale from zero to 100, where 0 = no colour rendering and 100 = full colour rendering. The colour rendering index of LED lights is also known as Ra, which is measured on a smaller scale than CRI. This Ra value does not include red tones or skin tones, for example, so it is a 'glossed' figure for the true quality of an LED light.
RA value
The Ra value measures the reproduction of colours using eight different reference colours. CRI takes into account the wider (15) wavelength range, including reds and other warm colours.
The Ra value is calculated by cutting the wavelength range, weighting the blue and violet tones, and calculating the weighted average of R numbers 1-8.
Excluded from the Ra value are, for example, the colour rendering of bright reds, yellows and greens, and shades close to skin tone. These are described by R-values between 9 and 15. The following is a picture of a measurement result that easily confuses the consumer.
This measurement is from a 9W CCT Led spot
Read more on this topic:
Colour rendering of LEDs - What is the difference between CRI and Ra-value?