Phoenix Contact 0828930 A device marker that is typically silver in color and lacks a label can be identified using various methods including the BLUEMARK ID COLOR, BLUEMARK ID, THERMOMARK PRIME, THERMOMARK CARD 2.0, or other specialized labels such as THERMOMARK CARD or THERMOMARK PRIME 2.0. The marker can be mounted using screws, rivets, and has two individual label slots available for text fields measuring 54 mm in height and 75.6 mm in width.