No 1 in Surge Protection. Twist to lock safety covers. Protection rating 800 joules. 4ft. extra - long power cord with space - saving flat plug. Twist to lock safety covers keep unused outlets closed. Protected indicator light shows the surge protector is working properly. Power filter provides a cleaner sound and picture experience. Integrated circuit breaker for overload protection. Specifications: Electrical rating 120VAC, 15A, 1800W. Joule Protection Rating 800. Voltage Protection Rating 500V (L-N, L-G, N-G).