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Security systems

Intruder alarm systems.

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What are commercial intruder alarm systems?

Commercial intruder alarm systems form the first line of defence in protecting your premises, assets, and people. Designed to detect and deter unauthorised access, they provide round-the-clock protection and peace of mind. In any business environment, the presence of a visible and reliable alarm system is a powerful deterrent, reducing the risk of break-ins and potential losses. Whether you manage an office, warehouse, or retail space, an intruder alarm system gives you control, confidence, and immediate awareness should a threat arise.

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Why choose Complii?

How we can help.

Protect your people, property, and business. Here’s why we’re the right choice for commercial intruder alarm systems.

Tailored system design

Every site presents different challenges, from layout and access points to security priorities. Our team carries out a detailed assessment of your premises to design an intruder alarm system that meets your exact needs. We build bespoke solutions that balance practicality with protection, ensuring your business stays secure at every level.

Professional installation and commissioning

Installed by qualified engineers, every system is set up to the highest safety and technical standards. We oversee all cabling, sensor placement, and configuration before conducting thorough commissioning tests, guaranteeing reliable performance from day one.

24/7 monitoring and response

Our intruder alarm systems can be linked to approved monitoring centres for continuous protection. In the event of an activation, an immediate alert is raised to designated contacts or security personnel, enabling a rapid response at any time of day or night.

Preventative maintenance and servicing

We provide regular servicing and health checks to ensure your alarm system remains fully operational. Preventative maintenance helps reduce false alarms, extend equipment life, and maintain compliance with current security standards.

Integration and scalability

Whether you operate a single site or a multi-location business, our systems are built to integrate seamlessly with other safety and security measures, including CCTV, access control, and fire detection. They’re also scalable, meaning your protection grows as your operations expand.

Trusted experience and compliance

With years of experience across critical safety systems, our engineers combine technical expertise with compliance knowledge to deliver dependable solutions. We stay ahead of evolving regulations and technology trends, so you can focus on running your business with confidence.

Your questions answered.

  • Sensors placed around your building detect movement or unauthorised access. If triggered, the system activates alarms, alerts monitoring teams, and can send instant notifications to your mobile device or designated contacts.

  • Yes. Research shows that premises fitted with visible alarm systems are significantly less likely to be targeted by criminals. The system acts as both a deterrent and an early warning mechanism.

  • Yes. We can connect your system to an accredited monitoring centre for 24/7 protection. Any activation will be assessed and escalated promptly, ensuring rapid response to potential threats.

  • We recommend a minimum of one service visit per year. Regular maintenance ensures reliability, reduces false activations, and verifies that your system meets all compliance requirements.

  • Absolutely. We can upgrade outdated alarm systems, add new sensors or zones, and integrate with modern technology for improved functionality and control.

  • Our systems are trusted across a wide range of industries, including offices, education, healthcare, hospitality, retail, and manufacturing. Any environment that stores valuable assets or sensitive data can benefit from enhanced protection.

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Compliance with confidence.

Get in touch for a tailored quotation that fits your site’s needs.