KNX is a playful approach to integrate mechanical elements into an object's functioning process. It's altering mechanism is inspired by the "muller's ratchet" - a slider snapping into place, allowing to move in either direction of the gearwheel. 

The interaction of angle, height of the gearwheel's teeth and load of the spring allow the slider to move with just the right amount of force. This way the mechanisms are to be moved smoothly, yet firmly enough to hold the weight of the lamp in place. It's name is granted hence the sound it makes whilst altering the lamp.