The Power Strip Safety Cover by Mommy's Helper protects both the children and the equipment from the dangers of curious little hands. Standard single row power strips can be easily inserted into the Safety Cover. After plugging the appliances into the outlets, the cover securely snaps shut. Fits most standard single row outlet power strips and surge suppressors. Fits most transformers and heavy gauge 3-prong plugs. For added safety, includes four outlet safety plugs for any unused outlets on the power strip. Convenient access to on/off switch.