5×7 Square Dot-matrix LED displays, 5mm Dot Diameter, Ultra-Bright Amber, Row Cathode Column Anode for Elevator Indicators Product Descriptions:This 5×7 square Dot-matrix LED displays, featuring a 5mm dot diameter and ultra-bright amber emission, is engineered for high visibility in elevator position indicators, lift floor displays, and moving signs. With compact dimensions (20×34×7mm) and a striking design-white diffused epoxy dots on a black face-it delivers reliable