expert Expert is Ireland's largest electrical retailer with 69 stores nationwide. The chosen lighting system is the QL4 QuarterLites from Expedio Lighting Ltd. They are ideally suited for large sky signs that are difficult and expensive to maintain. The 1500 mm diameter signs have 12 QL4 lights giving a light output of 4,800 Lm. The 1800’s have 21 lights and produces 8,400 Lm QuarterLites use very high brightness LEDs and reduce energy consumption by 65% - 85% in all signs. The have a longer lifespan than fluorescent tubes and do not require maintenance for over 50,000 hours. Energy saving 80% QL4 Specification: Light output 400 - 428 Lm Half life 50,000 + hours Input current 350mA, 4-12v, 4w Wave guides Silver ABS plastic

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