Beijer Electronics iX T7A EN - Manual (Page 7)

Safety Precautions
1.7 Appearance of Air in Touch Screen
• The layer structure of the touch screen contains air and in rare cases
appearance of bubbles can arise. This is purely cosmetic and does not affect
any functionality of the panel. The appearance can occur under certain
environmental conditions such as temperature, humidity, and atmospheric
pressure.
Beijer Electronics, MAEN016F 7