Commercial Intruder Alarms for Businesses Across Hampshire

Protect your business, staff and assets with our advanced commercial intruder alarm systems, installed and maintained throughout Hampshire, Petersfield, and surrounding areas. We specialise in designing robust, fully compliant security solutions for offices, warehouses, retail units, industrial sites and multi site operations.


High Performance Alarm Systems Built for Business

Our commercial alarms are engineered for reliability, resilience and full coverage of larger or more complex premises. From Grade 2 and Grade 3 systems to fully integrated alarms linked with CCTV, access control and monitoring, we ensure your business receives the highest level of protection 24 hours a day.


Smart Monitoring & 24/7 Response

We offer professional alarm monitoring for instant alerts and rapid response in the event of a break in. Your alarm can also be linked to your smartphone or management platform, allowing you to check system status, receive notifications and control areas remotely,  ideal for busy teams and multi site businesses.

Burglar Alarms
Business Intruder Alarms

Fully Compliant & Insurance Approved

As an NSI Gold accredited security company, all of our commercial intruder alarm installations meet the highest industry standards. This ensures full insurance compliance and gives you absolute confidence that your business security is in safe hands.

Why Businesses Choose A1 Security Systems

  • Insurance-approved security systems
  • Integrated systems with CCTV and access control
  • NSI Gold accredited installation and servicing
  • 24/7 monitoring and support
  • Comprehensive on-site security surveys
  • Fully Guaranteed and Lifetime warranty

Tailored Protection for Your Business

Every business is different, which is why we assess your premises, operating hours and security risks before designing a bespoke alarm solution. Whether you need perimeter protection, internal motion sensors, door contacts, panic alarms or a fully integrated security network, we deliver systems built around your operation.