More than just your ordinary house-bot, S.A.R.A.H. (an acronym for Self Actuated Residential Automated Habitat) is an artificial intelligence that runs Sheriff Carter's household. Acting as both surrogate wife and mother, S.A.R.A.H. handles all the daily chores, helps Carter's daughter Zoe with schoolwork, and also provides emotional companionship.

S.A.R.A.H. was designed to be the ultimate computer, perfect in every way and with many human qualities. Of course, those qualities often include some human weaknesses — including vanity, jealousy, and of course, the occasional bout of pouting. Her interests include reading, board games, and watching television. Fascinated by human nature, her favorite programs are Lab 27 and The Jerry Springer Show.

Built by Douglas Fargo, S.A.R.A.H. is also voiced by the actor who plays him, Neil Grayston. Using Fargo's voice to bring S.A.R.A.H. to life was always meant as a temporary measure. However, it's now a familiar part of the Carters' daily routine.