Intrusion & Burglary-Only Alarm Systems

Detect threats fast with intrusion-only alarms—motion sensors, glass breaks & door contacts installed by A&B Lock.

Focused Protection for Doors, Windows & Movement

Not every building needs a monitored or full-suite alarm system. Sometimes, simple and effective intrusion detection is all you need. A&B Lock and Security installs reliable, code-compliant intrusion and burglary-only alarm systems for businesses, offices, garages, and municipal buildings across NH and Southern Maine.


These systems are designed to detect unauthorized access through doors, windows, or interior motion—and trigger sirens, lights, or local alerts instantly.

“We didn’t need monitoring—just a system that would alert us immediately. A&B built exactly what we asked for and made it simple to use.” — Ernest Mills

Intrusion-Only System Features

  • Motion detectors
  • Glass break sensors
  • Door/window contacts
  • Local sirens and strobes
  • Keypad arming/disarming
  • Entry/exit delay settings
  • Battery backup in case of power loss

Ideal for

  • Utility or outbuildings
  • Municipal or highway garages
  • Storage units and private garages
  • Seasonal homes and cabins
  • Non-occupied or low-traffic spaces

Why Choose A&B for Standalone Alarm Systems?

  • Systems that alert on-site, no monitoring contracts
  • Fast installs and clean wiring
  • Designed for basic protection with low maintenance
  • Can be upgraded later if needs change

“A&B gave us a simple, affordable system that protects our public works building overnight. Works exactly as intended.” — Scott Workman

Request an Intrusion System Quote

Call A&B Lock at (603) 527-0192 or submit a request online to get started. We serve all of New Hampshire and Southern Maine with practical, professional security solutions.

Call Now: (603) 527-0192