Phoenix Contact 0818357 A marker specifically designed to mark terminal blocks can be identified by its red color and lack of labeling. It is intended for use with various label types including BLUEMARK ID COLOR, BLUEMARK ID, BLUEMARK CLD, PLOTMARK, CMS-P1-PLOTTER, and BLUEMARK E.CARD, featuring a mounting type that allows latching onto terminal blocks. The marker accommodates widths of 6.2mm terminal blocks and can display up to 80 individual labels, with text fields measuring 10.5mm in height and 5.6mm in width.