Proton’s newest NSA degausser erases hard drives and other magnetic media in 20 seconds or less. It produces a magnetic field of at least 20,000 Gauss (2 Tesla) per cycle and is approved to handle Top Secret / Classified data. For performance verification, its internal Gaussmeter guarantees

                                                           Proton T-4 produces a bi-directional field, which provides a 20,000 Gauss positive field and a 20,000 Gauss negative field.