A wireless transmission device which communicates with a wireless reception device is provided with a transmission-signal-generating unit configured to generate, transmission signals having transmission rates arranged in order corresponding to an input order of data items of the information sequence. The end regions of the cover are preferably open, with the result that in the region of the laid-together edge regions the two edge regions lie on top of one another and are connected by a frangible seam. Namely, by a cooling fluid pump, the cooling fluid received in the receiving unit is drained from a drain port and the cooling fluid is supplied from a feed port to the receiving unit and received in the receiving space. The hands-free mechanism is further coupled to the latch and operable to disengage the latch to permit movement of the cover to the open position.