This is a very convenient automatic dustpan, usually located in the plinth of a kitchen unit for sweeping up crumbs and debris from the floor and compliments the majority of central vacuum systems now sold.
No need to bend down with a dustpan and brush. Press the switch with your foot to turn on, brush crumbs and debris upto it and see the dirt whisked away.
For instructions on how to install please see the images above or look on page 8 of the Design Installation Manual PDF document shown below.
Size 217mm x 55mm Depth 134mm