Commercial Security Systems Portsmouth

Smart, compliant security solutions designed to protect businesses, sites, and assets — monitored and maintained 24/7.

Our Security & Smart Technology Solutions

We offer a complete range of security and smart technology solutions for both residential and commercial properties. From intruder alarms, CCTV, and fire detection to access control, networking, and temporary site security, each system can be installed individually or combined into a fully integrated ecosystem. Our smart platforms bring everything together into one simple app — allowing you to manage security, monitoring, automation, and home comfort seamlessly from a single interface.

Intruder Alarm Systems

Wireless Smart systems, Wired smart systems, Hybrid Smart systems, Take over service for existing systems, Service and maintenance, 24/7 Monitoring service.

CCTV Systems

4K Systems, AI systems, Video doorbells, take over of existing systems, ANPR Number plate recognition Systems, Service and maintenance

Fire Alarm Systems

Wired Fire alarm systems, smart Wireless systems, HMO Systems/Solutions, Take over service for existing systems, Service, maintenance and compliance, 24/7 Monitiring, Fire Risk assessments

Temporary site security / Vacant property security/ Scaffold Alarm systems

Smart security alarms, CCTV and fire detection with remote connection

Access control and intercoms

Standalone Access control, Networked access control. Intercom systems, Take over service and service and monitoring.

Wi-Fi and data

Starlink, Wi-Fi Extensions, Fibre optics.

Can you take over and upgrade existing systems?

Absolutely. We offer takeover services for existing intruder alarms, CCTV, fire alarm systems, access control, and intercoms — often upgrading them to smart, app-based systems without the need for a full replacement.

Do you offer 24/7 monitoring?

Yes. We provide 24/7 monitoring services for intruder alarms, fire detection, and CCTV, ensuring rapid response and peace of mind at all times.

Are your systems wireless or wired?

We install wireless, wired, and hybrid systems depending on your premises, requirements, and budget. We’ll always recommend the most suitable option for your situation.

Can multiple systems be controlled from one app?

Yes. Our integrated ecosystems allow you to manage intruder alarms, CCTV, fire detection, access control, and automation through a single, easy-to-use app.

Do you offer servicing and maintenance contracts?

Yes. We provide ongoing service and maintenance packages to ensure your systems remain fully operational, compliant, and up to date.

Firstly, appreciated Jake's fresh approach. Resolve some long-standing problems and brought installations up to standard. Knowledgeable, approachable and realistic coupled with flexibility all combined to make working with D3 the polar opposite of the frustrations and lack of trust encountered with previous service provider. Recommended.

Ian

We have used Jake a number of times on our projects now and will 100% continue to do so. Jake is very knowledgeable and experienced at what he does and is always happy to help and advise. Nothing is ever to much! Very reasonably priced and always delivers a top job.

George

Very good service from start to finish, Jake spent some time trying to fix old cameras to save me money but wasn’t possible. He put new cameras ect in , in a short time, very pleased with his work. Would recommend D3 Systems to anyone. His service was brilliant.

Michael

Happy clients

Protect your premises, people, and assets with a security solution built around your business. From compliance-ready fire systems to fully monitored intruder and CCTV solutions, we’ll design, install, and manage everything for you. Get in touch today to arrange a free site survey and tailored quote.

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