Simon Security Systems serves clients across Amawalk, The Ardsley, Ardsley-on-Hudson, Armonk, Baldwin Place, Bedford, Bedford Hills, Briarcliff Manor, Bronxville, Bronx County, The Buchanan, Chappaqua, Cortlandt Manor, Crompond, Cross River, Croton Falls, Croton-on-Hudson, Dobbs Ferry , Eastchester , Elmsford , Goldens Bridge , Granite Springs , Harrison , Hartsdale , Hastings-on-Hudson , Hawthorne , Irvington , Jefferson Valley , Katonah , Larchmont , Lincolndale , Mamaroneck , Manhattan , Maryknoll , Millwood , Mohegan Lake , Montrose , Mount Kisco , Mount Vernon , Newburgh , New Rochelle , New York County , North Salem , Ossining , Peekskill , Pelham , Pleasantville , Port Chester , Pound Ridge, Purchase , Purdys , Rye , Scarsdale , Shenorock , Shrub Oak , Somers , South Salem , Tarrytown , Thornwood , Tuckahoe , Valhalla , Verplanck , Waccabuc , West Harrison , White Plains , Yonkers , Yorktown Heights , Westchester County and the surrounding areas.