Diamond Systems

At Diamond Systems, our purpose is to help people understand how to protect themselves, their families, and their businesses from life safety threats, security risks, and the consequences of non-compliance. Founded in 1987, we are one of Northern Ireland’s longest-standing, family-owned and NSI Gold approved fire and security companies. We sit in a unique space—offering the personal, responsive service of a local business with the capabilities and professionalism you’d expect from a national provider. We provide the complete fire and security solution, tailored to the specific needs of each client. From initial design through to installation, commissioning, maintenance and 24/7 monitoring, we bring clarity, reassurance and expert support every step of the way. What sets us apart: A reputation built on trust, experience and reliability A fully in-house, end-to-end service model A focus on sustainable, cyber-secure, and innovative solutions An unrivalled product range, backed by industry-leading partners A lean approach, including off-site system build and remote-first support Whether you're safeguarding a high-value home, a manufacturing site, or a multi-site public organisation, we help you protect what matters most—with minimal disruption and maximum peace of mind. Our core systems include: • Fire Detection & Alarm • Intruder Detection & Alarm • Electronic Access Control • CCTV & Video Surveillance We are also the sole Northern Ireland distributor for the sustainable fire extinguisher - the P50, from Britannia Fire.