Aura 20W ( =24W ) T5 Eco Saver HO Long Life, T5 549MM 830 Warm White 3000K Aura T5 Eco Saver Long Life is suitable for operation in luminaires where a slightly higher temperature occurs, the maximum for a T5 lamp occurs at an ambient temperature of +35C. It fits in all luminaires developed and assembled for T5 (16 mm) fluorescent lamps. It is a high colour rendering tri-phosphor lamp (Ra 85) and is available in several colours. The Aura T5 Eco Saver Long Life-range is designed for operation with electronic ballast (preferably warm start). To be able to cash in on up to 10% lower energy consumption the electronic ballast used need to be current-controlled. With power-controlled electronic ballasts the lamp instead increases its light level, up to 10%. When using dimming ballasts it is necessary to operate the lamp at full level (100%) for 100 hours in order to stabilise the lamp and to reach the full potential of its lifetime.