Key module for a key for a keyboard, method for manufacturing a key module for a key for a keyboard and method for determining an operating state of a key for a keyboard

It presents a key module (120) for a key for a keyboard. In this case, the keyboard module (120) a module base (230) and a relative to the base module (230) along an axis of actuation keys movable in the base module (230) that can be placed or arranged key plunger (250) on. Also, the key module (120) comprises a timer means (260) which is formed on the key plunger (250), and a circuit board (240) on at least an electric coil (270). Here, the printed circuit board (240) as in the module base (230) can be received or picked up, that a main extension plane of the printed circuit board (240) extends along the axis of key operation of the key plunger (250).