When a user inputs data to a device having a plurality of data input units such as a text data input unit, e. The leads have terminal ends permanently connected to the support and tip ends releasably connected to the support. Alternatively, the marking layer is formed on the first hologram by laminating one or more second hologram layers thereon. Such axial movement of the first and second handles concurrently couples the handles mechanically to the corresponding fluid control valves to provide the desired manual actuation. Features of the nodessites andor of the radio access network include power load control; intermittent charging of batteries; controlled charging of batteries; and multiple power backup banks.