An operating device for a lifting platform, particularly for a vehicle lifting platform, includes a housing including a plurality of operating elements for operating the lifting platform. The mounting card has a flat surface for holding the elongated flexible medical component. The technique is applicable to both IQ-modulators and polar modulators, thereby allowing cost-efficient and current-efficient polar modulators andor cost-efficient power amplifiers to be utilized. For a microphone array having at least three microphones, wherein one of the microphones is disposed between the other of the microphones, a method of determining the arrangement of the microphones in the array is also disclosed. The pivot arm rotates a number of spring clips against the device thereby holding it in place. The information security method includes setting and storing service items to be allowed according to wireless security levels supported by the wireless printer, selecting one of the wireless security levels, and executing a service requested by a user if the requested service is one of allowed service items for the selected wireless security level.