6 The advantages at a glance Low energy consumption and safe operation Thanks to their low energy consumption, CO₂ emissions during operation can also be reduced. As LED luminaires do not contain mercury, there is no associated environmental impact from this substance. Naturally, all of our products meet the requirements of Guideline 2011/65/EU regarding limiting the use of certain hazardous substances in electric and electronic devices (RoHS). High switching capacity On – Off – On – Off … Contrary to energy-saving and fluorescent lamps, the robust light emitting diode is practically impervious to frequent switching on/off. Thus they are also well-suited for switch intensive operation on motion detectors. Immediate full light output Energy-saving and discharge lamps require a „warm-up time“ of almost a few minutes to reach full brightness. With LEDs, this scenario is a thing of the past because they offer immediate 100 % light output when turned on. Full light output even at low temperatures LEDs also operate extremely efficiently at low temperatures and are, therefore, ideal for use in outside areas or in unheated buildings. For example, while an LED tube continues to emit its full light output at an ambient temperature of 0 °C, a typical fluorescent tube, which is designed for ambient temperatures of 20 °C, only emits 40-60 % of its max. value. Low attractiveness to insects Insect eyes contrary to human eyes are especially sensitive to ultraviolet radiation (UV). While the mercury vapour high pressure lamps frequently used in the past acted like a vacuum cleaner sucking up millions of insects due to its high share of UV, the light emitted by LEDs are very insect-friendly – it contains practically no UV radiation. Low additional heat input The light emitted by an LED remains cool – compare that to thermal radiators such halogen or incandescent light bulb lamps for which a large portion of the energy is output in infrared radiation and thus in heat. The electronics of LEDs due in fact produce heat; however, this is not emitted in the direction of the object being illuminated. Natural colour perception In dairy cattle farming, a high and natural colour rendering is required for the colour differentiation between blood, urine and milk, especially in treatment areas, sick stalls and calving bays. The quality of the colour rendering is expressed in terms of the Ra value. The maximum possible value is 100. A Ra value of > 75 is recommended. Contrary to LEDs, sodium vapour lamps, for example, have a very poor colour rendering (Ra 20-50). OFF ON
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