Stressed About Needing a Custom Security System in Mount Vernon, ME or Kennebec County? Relax, Cates Electric has it under control Whether you just built a new home or you want to improve your business's security measures, you can depend on Cates Electric LLC for superior security solutions. We install custom security systems in Mount Vernon, ME and Kennebec County. We do it all, from the security cameras and alarm system to the access control system and intercom. You can rely on us to take your security efforts to a whole new level.