HDSP-5507 LED display, Digits: + / - 1 , 0.56" (14.2mm) high digits , common Anode (HER - High Effeciency Red). Gray face and sides by Hewlett-Packard (Agilent) Extra bright - suitable for high ambient light conditions. Download Hewlett-Packard (Agilent) HDSP-5507 .pdf datasheet: Status: NOS (New Old Stock) RoHS compliant: no