Auxiliary device has auxiliary function unit, and fixing unit snap auxiliary function unit from front without disassembling control or signaling device to integrated ready to use control or signaling device

摘要

The auxiliary device has an auxiliary function unit (12). The fixing units (13,14) snap the auxiliary function unit from front without disassembling the control or signaling device (2) to an integrated ready to use control or signaling device positioned without further part. The fixing units are designed to halt at an outer contour of a control or signaling device. An independent claim is also included for a control and signaling device.