below links in answer to any queries you may have, alternatively do not hesitate
contact us on
01788 555 038 or email our Technical Department on
Lumen Maintenance Figure
L70 is our definition for the lifetime expectancy of our LED light
Our LEDs usually have a typical lifetime of 30,000 hours, which means that after that period of
time the lumen output is reduced to 70%
Colour Rendering Ra/CRI
This is an important quality feature of light.
A light source that contains the full spectrum of colours, e.g. sunlight, makes the
colours of the illuminated items appear natural. Depending on use, artificial light
should show objects in a light as natural as possible (as in normal daylight).
The colour rendering properties of a light source, expressed in levels according to the
“general colour rendering index” Ra/CRI, are the benchmark for this.
A light source with Ra/CRI = 100 reproduces all colours perfectly. The higher the
Ra/CRI value, the more natural the colours are reproduced.
Marks of Conformity
Marking of Luminaries
Symbols for Installation
For the consumer, testing of the safety of the product by an independent, accredited
testing agency is indicated by a mark of conformity. The marks of renowned testing agencies
are detailed through this link together with the Marking of Luminaries and Installation
Those who work with light, sell or explain lighting systems, must know the following
basic terms in order to be able to describe light and its effects.