The Ledvance LED Batten Switch 10W 1100lm 840 Cool White 90cm Replaces 1x21W with its socket is characterized by a set of specifications. The colour temperature of 4000K Cool White Kelvin makes it possible to create a nice and pleasant atmosphere making it the right choice for your building! The colour code 840 Cool White does not only include the colour temperature which has already been mentioned but also the colour rendering which is defined by the ability to make us distinguish all the colors of illuminated objects. The colour rendering of this product is 8089 and therefore excellent for the usage of this product.