The present invention relates to a safety switching device for connecting and safely disconnecting an electrical load, in particular an electrically driven machine. Water passes through the filter at an upward angle. The purpose of the delegation is to allow another security token or computer system to act as a surrogate for the security token or to access a resource which requires components from both units before access is permitted. The material of the rotary cylinder has a coefficient of thermal expansion that is smaller than that of the material of the fixed surface. The electrical interaction between the probe and the input board generates a vote signal for recording and causes ink to be released from the probe to mark a corresponding spot on the paper ballot.