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  • Wireless 24/7 monitoring
  • Intrusion detection
  • Fire & environmental detection
  • Trusted brands like Honeywell
  • Camera surveillance
  • Smart Phone App
  • U.L. Listed Radio 24/7 monitoring
  • Sprinkler monitoring
  • Manual Fire alarms
  • Trusted brands like Keyscan
  • CCTV w/ onsite recording/off site viewing
  • Access control




  • Make sure you have monitored smoke detectors for that time when a burglar gets stuck in your chimney... Suspected Burglar Stuck in Chimney Dies After Homeowner Starts Fire in Fireplace
    Nov 29 7:12PM
  • In 1983, Joe F. Duncan, Jr. designed our logo within the outline of the state of TN, becoming one of the first Nashville companies using this method of design. Now you see this method everywhere :-) Timeline Photos
    Nov 28 9:12AM
  • Three different small Nashville security companies sold-out in 2015, leaving Duncan Security as the oldest family-owned and operated security company, celebrating 32 years of business.
    Nov 28 1:44PM
  • Listen to NASA and support small businesses everyday of the year, not just on one Saturday. Small Business Saturday
    Nov 28 8:41AM