A probe module includes a mount; a cantilever disposed on the mount; an electrode disposed on the mount and opposing the cantilever, and a primary fastener disposed on the mount to mechanically separate the cantilever and the electrode at a primary distance. The motor control device controls the motor via the inverter so that the control current follows the specified current value. The container also includes a puck and a box. The apparatus may also comprise an aperture mechanism that, if kept stationary, allows the spot beam to pass through. A sectional door includes an image printed thereon and the electronic image being the printed on the door section.