Heavy-duty shredder offers a mobile, high performance data security device that makes an ideal central device for large offices. Stops automatically when the container is full and door is open. Offers a security level 4, automatic start/stop control via electronic eye, reverse button to release overfed paper, standby mode with LED indicator and safety element above paper intake with in-feed slot for CDs/DVDs/floppy disks in security level 2. Waste bin includes a reusable collecting bag. Enclosed housing protects against paper dust. The tried-and-tested closed-tooth wheel drive prevents penetration of dirt and slows wear, increasing the service life.