40 x 40mm outdoor LED cluster lamp 40x 40mm Square Outdoor LED Cluster Features:1) Size: 40x40mm square outdoor led cluster lamp2) 12pcs led lamps per led cluster lamp3) Colors ... .6) Applications: for outdoor LED VMS led sign, outdoor led clock, outdoor moving message sign, outdoor led graphics sign, outdoor led advertising display, all kinds of outdoor LED electronic sign, etc.7 ...