Designed for use on sensitive equipment that needs to always remain plugged into a power source, the Three-Prong Electrical Cord Lock can be used in healthcare settings, server rooms, classrooms, on construction job sites and other business settings. It fits around standard size male electrical cord plugs. To install the lock, users simply remove the original outlet screw from the wall plate, plug in the cord, and then secure it to the wall outlet using the proprietary security screw and provided Allen Key.