Phoenix Contact 1014176 A mandatory sign card with a blue and white color scheme is required and should not be labeled. However, it can be labeled with the approved products THERMOMARK PRIME, THERMOMARK CARD 2.0, or THERMOMARK CARD, which come in an adhesive mounting type and have dimensions of 50 mm in diameter. The individual labels include four different labels, each measuring 50 mm in height and width to accommodate a text field with the same size.