The PS-406-HGULTRA Medical-Grade Power Strip is designed with full 60601-1 compliance, making it ideal for use in all patient-care vicinities. This 120V, 50/60 Hz power strip features a NEMA 5-15P-HG hospital-grade plug and four NEMA 5-15R-HG hospital-grade outlets that include integrated locking safety covers. A patented protection circuit guards against shock hazards by preventing power from reaching the unit's outlets in the presence of a fault. The protection circuit automatically resets itself and restores power once the fault threat is gone. Mounting tabs and flanges let you install the PS-406-HGULTRA on a wide variety of surfaces. The all-metal housing ensures safety and is guaranteed to last a long time in demanding environments. With a switchless design that prevents accidental shutoff and a 6 ft. power cord that provides some flexibility in placing the power strip, the PS-406-HGULTRA is the perfect replacement for all non-compliant power strips. Patent # 7,375,939