100% jam proof eliminates paper jams and powers through tough jobssafesense technology immediately stops shredding when hands touch the paper entrysilentshred technology minimises disruption in shared work spacesenergy savings system reduces in-use energy consumption and powers down after periods of inactivity.100% jam proof eliminates paper jams and powers through tough jobssafesense technology immediately stops shredding when hands touch the paper entrysilentshred technology minimises disruption in shared work spacesenergy savings system reduces in-use energy consumption and powers down after periods of inactivity.extended runtime of 25 minutes for high volume shreddingshreds 17 sheets of a4 paper per pass into 4 x 38mm cross cut particles (security level p-4)