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Light sources all have a colour temperature which will dictate whether the light emitted is either of a warm colour, an intermediate or neutral colour, a cool colour or a cold colour. The higher the colour temperature, the cooler, the colour appearance of the light source. The Colour Temperature is a description of the warmth or coolness of a light source. It is most simply, a method of demonstrating the colour characteristics of light, usually either as warm (yellowish) colour or a cool (bluish) colour.

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The beam angle is the point at which the light output Lumens drop below 50% of the total light output. LED beam angles typically vary between 10° - 120°. The beam angle is the area where the light is at its most intense.

All light sources degrade over time. LM80 is the method for measuring how much lumen depreciation the light source will suffer. This is not to be confused with an estimation of life. LED's typically do not fail as they have no filament to burn to end their life, rather degrade beyond useful life output.