Clear Channel Ritazza Sign Lights Clear Channel UK Ltd uses QL4 QuarterLites to reduce energy consumption in its 6-Sheet bus shelter advertising boxes in the UK. A special retro-fit was developed to suit this size of box and make it very quick and easy to install on site. The QL4’s use the latest high power LEDs to reduce energy consumption by 71%. The light output more than matched the fluorescent tubes they were replacing in this high (ambient) brightness area. They require no maintenance for over 50,000 hours. Energy saving 71% Maintenance free 11.9 years QL4 Specification: Light output 400 - 428 Lm Half life 50,000 + hours Input current 350mA, 4-12v, 4w Wave guides Silver ABS plastic Heat Sink Aluminium Op/temperature Ambient + 6° C Size 80 x

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