The Essential Surge Protector CSB604 offers vital surge protection for common home and office devices such as computers and electronics. It prevents spikes in energy caused by storms and electrical power surges from reaching your electronic equipment. The CSB604 provides 900 joules of protection with 6 outlets and a power cord (4 ft.).Features of the CSB604 include automatic shutdown, metal oxide varistor (MOV) technology, an EMI/RFI noise filter, keyhole mounting slots, and impact-resistant casing.