The CAP Wheel Click Board™ is a capacitive touch sensor with round-shaped electrodes integrated on a Click Board™. This Click Board™ can sense touch even through plastic, wood, or other dielectric materials, which can be used to protect the surface of the PCB and the sensor pad trace itself. Therefore, the CAP Wheel Click Board™ comes with an overlay, made of plexiglass. Unlike the mechanical button, the capacitive touch button lasts much longer, it is not prone to damage and wears over time and it is very reliable.