The Excursion Plate is one of the Plates added by Thermal Expansion. It is an upgraded version of the Impulse Plate. It uses Redstone Flux to project a beam of force which moves entities in a certain direction, defying gravity. The beam has a configurable maximum length, and dissipates when far enough from the Plate.
The Plate can be placed on any side of a block. Its beam normally moves entities away from the Plate, but it can be configured to pull entities towards itself instead, or to switch between the two according to a Redstone signal.
The Excursion Plate consumes energy whenever possible to project its beam. The amount of RF/t consumed is equal to the length in blocks of the Plate's beam; for example, the Plate uses 20 RF/t when the projected beam is 20 blocks long. The Plate can store 200000 RF internally.
The Excursion Plate can be configured by sneaking and using a Multimeter on it. The Plate's GUI is then opened: