A system and method for searching for inventory information using a computerized virtual warehouse. Said comb tooth holder consists of at least one comb tooth body and at least one comb tooth. Also provided is an application module having the shape of a panel which covers the end of the base module inserted through the opening and whose panel surface projects into or through an aperture in the free end of the hand lever, or in which the hand lever is shortened in such a way that it releases the panel surface. The piston is arranged to be non-rotating in the cylinder by forming the cross section of the piston and the cylinder to be deviant from a round form, such as having an oval or angular shape, or by adjusting the piston to be eccentric in relation to a bearing axis thereof. Output signals of the first and the second microphone units are outputted with channels of the signals being exchanged or non-exchanged by the switch in accordance with an angle formed by the directional axes. A rheostat may further be electrically connected, in series, between the thermistor array and the cooling device.