Dahle High Security Shredders offer the greatest protection available. These machines are designed for military, federal, state or local governments as well as Department of Defense contractors engaged in projects where National Security is an issue.Each shredder is equipped with an automatic oiler that provides slow, continuous lubrication across the entire cutting mechanism. The oil reduces wear on the precision milled cutting cylinders and ensures optimal shred capacity and performance.Each shredder features SmartPower Energy Management. This revolutionary multi-stage system reduces power consumption after ten minutes of sitting idle (sleep mode), and completely powers down after an additional 20 minutes of inactivity (excludes 20394).