Outlets Type: NEMA 5-20R Input Voltage: 120V Voltage Compatibility: 120V AC Output Amperage Capacity: 20 Maximum Spike Amperage: 90,000 A Clamping Voltage: N-H 400V, N-G 500V, H-G 400V Certifications: UL1363 UL1449 certified by ETL(USA), CSA C22.2(Canada) Unit Weight: 4.88 lbs.