Security Systems & Monitoring in Aberdeen, MD

Professional Protection for Homes and Businesses

Aberdeen’s Local Security Experts – Harford Alarm Co.

When it comes to protecting your home, business, or commercial property in Aberdeen, MD, trust the experienced professionals at Harford Alarm Co. We’ve been securing properties in Harford County for over 60 years with advanced alarm systems, fire protection, access control, security cameras, and intercom solutions. Our systems are designed to deter threats, monitor activity, and alert you instantly — whether you're on-site or away.


From downtown Aberdeen to residential neighborhoods and industrial facilities near APG, we bring local expertise and responsive service to every job.

Our Security Services in Aberdeen, MD

🏠 Residential Security Systems

Keep your family and property safe 24/7 with our user-friendly, smart home security solutions.


  • Wireless Alarm Systems
  • Door/Window Sensors & Motion Detectors
  • Mobile App Monitoring
  • 24/7 Professional Alarm Monitoring

🏢 Commercial Security Services

From small storefronts to large corporate offices, we offer scalable commercial systems that protect your assets and employees.


  • Burglar & Intrusion Alarms
  • Surveillance Systems with Remote Viewing
  • Entry Point Monitoring
  • Activity Reports & Alerts

🔐 Access Control

Streamline and secure entry to your property with cutting-edge access control solutions.


  • Keypad & Card/Fob Entry Systems
  • Scheduled Door Locking/Unlocking
  • Real-Time User Tracking
  • Cloud-Based System Management

🎥 Video Surveillance

Monitor your property anytime, anywhere with high-definition security cameras.


  • Indoor & Outdoor Camera Installation
  • Night Vision & Motion Detection
  • Live Viewing from Any Device
  • Secure Video Storage (Cloud or On-Site)

🔥 Fire Protection Systems

Prevent fires and reduce risk with advanced detection systems built to meet residential and commercial code requirements.


  • Smoke & Heat Detectors
  • Fire Alarm Panels & Strobes
  • Emergency System Monitoring
  • Annual Inspections & Testing

📞 Intercom & Entry Systems

Improve communication and control with intercom systems designed for homes, apartment buildings, and commercial properties.


  • Audio/Video Door Entry Panels
  • Visitor Verification
  • Integrated Access Control
  • Multi-Tenant Capabilities

Why Choose Harford Alarm Co. in Aberdeen?

  • ✅ Trusted in Harford County Since the 1950s
  • ✅ Customized Security Systems for Every Property
  • ✅ Licensed Technicians & Professional Installations
  • ✅ 24/7 Monitoring with Local Support
  • ✅ Serving Residential, Commercial, and Industrial Clients


We proudly serve all of Aberdeen, including Aberdeen Proving Ground (APG), Paradise Manor, Swan Meadows, and Bush Chapel areas.

Get a Free Security Estimate in Aberdeen, MD

Secure your home or business today with help from Harford County’s most trusted security professionals. Reach out for a custom quote based on your needs.

📞 Call: (410) 879-0432
📧 Email: info@harfordalarm.com

Now serving Aberdeen, MD 21001 and all surrounding communities.

Harford Alarm Co. – Providing professional, reliable, and local security solutions to Aberdeen homes and businesses for over 60 years.