A shield can of a mobile terminal is provided. The apparatus is self-contained, and may run from a standard, single phase electrical outlet. The apparatus further includes an instrument support attached to the housing adjacent the cleaning tool. The driving members act on the printed products to convey the printed products in a direction parallel to a conveying direction of the conveying device. When the handover is complete, the LTE processor sends the transmission status of the set of IP packets to the DSP. The ball is designed to float on the liquid so that any liquid attempting to exit the container cap will be prevented from doing so as the second valve will be closed when the liquid forces the ball into engagement with the conic section tube.