Specialists in Fire & Security

Helping people stay safe and compliant, since 1987.

FREE Consultation

Our Services

Security Systems

Tailored Solutions for Homes & Businesses

We offer advanced security solutions to protect your premises from threats. Our services include:

  • Intruder Alarms
  • CCTV Surveillance
  • Access Control
  • Perimeter Security
Explore Security Solutions

Life Safety Systems

Ensuring Compliance & Safety

Protect your employees, customers, and assets with industry-leading life safety solutions:

  • Fire Alarm Systems
  • Emergency Lighting
  • Disabled Refuge Systems
  • Gas Detection & Suppression
Find out more

Maintenance & Monitoring

24/7 Protection & Rapid Response

Regular maintenance and monitoring ensure your systems work when you need them most:

  • 24/7 Alarm Monitoring
  • Planned Preventative Maintenance
  • Emergency Call-Outs
  • System Health Checks
Book a service

Compliance & Training

Empowering Businesses & Teams

We provide certified training to ensure compliance and system effectiveness:

  • Fire Safety Training
  • Security System Training
  • First Aid & Emergency Response
  • Fire Warden Training
View training options

Proven Expertise in Security & Fire Solutions

Discover how we’ve helped businesses and organisations across Northern Ireland with bespoke security and fire safety solutions.

City Quays 3, Belfast

View case study

City North Hotel, County Meath

View case study

AJ Power, Craigavon

View case study

The Odyssey Complex, Belfast

View case study

View more projects

Who We Are

Diamond protect lives and safeguard assets with intelligent life safety and security systems.

Diamond Systems is a second-generation family business, NSI Gold-accredited, and trusted across Northern Ireland and beyond. Our expertise in security and life safety systems ensures the highest level of protection for homes and businesses.

More About Us

What Our Clients Say

We pride ourselves on providing an exceptional service to our clients, read what our clients have to say about working with us.

“At United Feeds, we trust Diamond Systems. This is why we continually put the safety of our people and assets in their hands.”
Five star review icon
“Diamond are our partner for both our security and fire alarms. They are professional, efficient and deal with any requests quickly.”
Five star review icon
“Have used this company for many years and would happily recommend to anyone seeking a professional and efficient service. They have always been helpful and carry out all our annual inspections to a high standard.”
Five star review icon
“Trusted, preventative maintenance of our Fire Detection and Alarm System. Highly Recommend!”
Five star review icon

News

Latest Posts

The Diamond Download: November… and No Slowing Down Just Yet!

Every month, our Joint Managing Director, Angela Bennett, shares an insight into...

Read more >

Lithium Battery Fire Risk: What You Need to Know

E-bikes and e-scooters are now common across offices, apartment blocks and...

Read more >

NISG Annual Conference Highlights: Preparing for Martyn’s Law and Strengthening Venue Safety

The Northern Ireland Safety Group (NISG) Annual Conference at the La Mon Hotel...

Read more >

View all News
Quotation arrow graphic

Follow Us:

  • Facebook icon
  • Twitter icon
  • Linkedin icon

Find us:

Google Maps icon Head Office Location
© 2025 Diamond Electronic Systems Ltd. | Website design by BagofBees
Privacy Policy | Terms & Conditions