An actuator having a two-parameters energy converter is coupled to a transducer and is driven by a controller. The access device receives a supply of main power from a main power supply, and the access device is adapted to interface with a communications network. The end-user computer then determines if the distribution list is non-empty, and if it is non-empty, selects a distribution from the distribution list using a selected one of manual and automatic modes. The aforementioned sources and drains are in the active areas located on both sides of the control gates, wherein the drains are enclosed by the wells of second conductive type; and the sources are located on both sides of the wells of second conductive type and electrically connected with each other via the deep well of first conductive type. If a particular one of the objects is determined to be adjacent to an obstructing one of the objects, a focal point of the viewable field is set at a location that is a different location than a location of the particular one of the objects. The length of the light pipe is such that the reflective optical sensor and the active surface are spaced-apart from each other.