0 0 0 Gary E Elk Grove, CA Like Clip Decks & Patios Electrical & Lighting Fences Outdoor Living Pools & Spas Windows & Doors we just installed a fence around our pool. how do we alarm the fence and possibly the french doors that lead to the back yard. 1 Comment KMS Woodworks Nederland, CO Most alarm companies use some type of magnetic switch as part of the design. these are conected to the central system and can be Identified by location. NOTE: You can drag and drop your photos to reorder them [?] You can select multiple files by holding down the Ctrl key (or Command key on a Mac) and left-clicking on individual files. Each file can be up to 20 MB. or Embed Video Add Required Comment Saving...