Comprehensive SPS safety package: Easy Switch control element uses illuminated color codes and symbols to indicate operational status and functions as an emergency stop switch; patented, electronically controlled, transparent safety shield in the feed opening; automatic power cut-off when cabinet is opened or shred bin is full; automatic reverse and power cut-off when overfed; double protection against overheating; Zero Energy Consumption sleep mode cuts off power supply after 30 minutes of inactivity. Automatic start and stop controlled by photo cell. Patented Electronic Capacity Control (ECC) indicator prevents jams by monitoring sheet capacity levels during operation. High quality, hardened steel cutting shafts take staples, paper clips, and credit cards (strip-cut and 4 x 40 cross-cut models take CDs / DVDs). Lifetime warranty on the cutting shafts. Quiet and powerful single phase motor rated for continuous operation. Sturdy Twin Drive System with fully enclosed gear box housing. High quality wooden cabinet mounted on casters. Convenient, environmentally friendly shred bin does not require disposable shred bags..