Energy Savings Systemâ„¢ feature optimizes shredder efficiency to reduce energy costs. Jam proof system electronically measures paper thickness to prevent jams. SafeSenseÂ® Technology stops shredding immediately when hands are too close to the paper opening. SilentShredâ„¢ performance shreds without noisy interruptions. Mess reduction feature reduces fly-away shreds and prevents paper build-up on cutters. Casters provide easy mobility.