The capacitive-controller found on this modules senses a finger touch through the finger's capacitance. Touch can be detected even if the module is mounted behind thin surfaces, like acrylic sheets. The module includes an eight-pad wheel, three buttons and even has proximity sensing, to detect when a finger is coming closer.
•Socket: I
•Size: 92mm x 62mm x 7.2mm
•Weight: 23g
•3.3V Consumption : 25mA
•5V Consumption: 0mA
•Includes one Gadgeteer cable