... source: Samsung LED quantity: 21 pieces 5630SMD led wall up down lights Item No: ELM-DL18-10W-WK1Input voltage: ... : >40, 000 hoursWarranty: 2 yearsFeatures of led wall up down lights No UV or IR radiationGreen and environment-protectionLow power ... heating outputSpecial product structure for heat eliminationApplication of led wall up down lights 1) hotel, restaurant, supermarket, school, office, ...