A valve assembly includes at least one multiport valve for controlling and applying pressure to a pneumatic unit and a base plate having passageways for supplying compressed fluid to a multiport valve and for draining compressed fluid from the multiport valve. The processor includes an instruction memory for storing instructions. The polypeptides may be used, for example, to identify antibodies and other agents that inhibit DSP-18 activity. A transceiver may accordingly be positioned a greater distance from the asset without regard to the orientation of the asset and still permit communication between the transceiver and the responding device. The self-closing enclosure mechanism is positioned over the accessory interface and is pivotable to move between a closed and open position. An outer cladding is disposed adjacent the inner cladding.