Security threats don’t wait for business hours. Whether managing a construction project, operating a logistics hub, or securing vacant commercial properties, you need more than just an alarm — you need a connected, intelligent system that sees, reacts, and protects in real time. Circle UK Group’s Alarm Systems deliver exactly that — modular, wireless, and fully monitored protection designed for the UK’s most demanding environments.
Why traditional alarms fall short
Standard wired alarm systems aren’t built for today’s mobile, multi-site, and outdoor environments. They require mains power, fixed installation, and often fail in areas with no internet or stable infrastructure.
Rising risks across commercial and construction sectors
In London and across the UK, construction sites, logistics hubs, and unoccupied buildings face daily risks of theft, trespassing, and vandalism. Equipment losses and downtime can cost thousands — or even jeopardise project deadlines.
Tailored protection for multiple industries
Circle Alarm Systems are built for flexibility. Whether you need temporary coverage for a remote project or long-term protection for a commercial premises, our systems deploy in minutes — no wiring, no waiting.
Designed for speed, flexibility, and reliability
Each Circle alarm component connects wirelessly through LTE or Wi-Fi, monitored 24/7 by our UK-based response centre. Businesses gain full control through a mobile app — with instant notifications, live video feeds, and remote system management.
Circle Alarm Solutions help solve key pain points for:
Construction site managers: Prevent equipment theft and trespassing on unmonitored areas.
Facilities and property teams: Protect vacant or under-maintenance buildings without fixed power.
Business owners: Gain visibility and peace of mind, even when off-site.
Developers and contractors: Stay compliant with insurance and health & safety requirements.
The Alarm Box is the central hub of the Circle system — connecting up to 100 wireless sensors to create a fully integrated security network.
14-day battery life with solar upgrade
Remote monitoring and LTE connectivity
Instant audio-visual alerts
Managed via the Circle mobile app
Compatible with AlarmPost, AlarmLine, and AlarmCam
It’s the backbone of every Circle setup — offering fast deployment and central control from anywhere in the UK.
The Alarm Post gives you eyes on the ground, delivering instant image verification when movement is detected.
Built-in camera sends images instantly
Up to 2-year battery life
60–150m wireless range
15m detection zone at a 90° angle
Works with AlarmTower, AlarmWatch, and AlarmBox
Perfect for construction zones and perimeter areas, the Alarm Post ensures you know exactly what’s happening, when it happens.
The Alarm Beam provides a discreet but powerful barrier of protection using dual-beam infrared technology.
30m coverage area
2-year battery life
Durable, tamper-proof design
Compatible with AlarmTower, AlarmWatch, and AlarmBox
Ideal for gated sites, compounds, and access points, it detects movement before intruders even reach your assets.
The Alarm Cam offers complete visibility of your site — live, recorded, or on-demand.
Live streaming, playback, and recording
Built-in GPS and router
Power options from 24 hours to 365 days
Solar and battery integration
Remote access via the Circle mobile app
Connect it to AlarmBox, AlarmPoint, or AlarmTower for total control. It’s a perfect fit for clients who want to see their site in real-time without fixed internet or mains.
The Alarm Tower combines video surveillance, sensors, and connectivity into one autonomous, solar-powered unit.
24/7 monitoring with HD cameras
Centralised control via Wi-Fi
Instant link with response teams
Up to 2 months independent operation
Integrates with all Circle devices for total perimeter coverage
It’s the ultimate “plug-and-protect” solution for large, high-risk, or remote sites — ensuring nothing goes unseen.
Every component of the Circle Alarm range works together seamlessly — forming one intelligent, connected ecosystem. From motion detection to live video, from remote management to instant alerts, it all integrates through Circle’s secure platform.
This modular design means systems can scale easily — protecting a single construction plot today and an entire commercial complex tomorrow.
Rapid installation: No cabling or mains required
Fully monitored: 24/7 UK-based response and support
Flexible and scalable: Perfect for both temporary and permanent setups
Trusted expertise: Proven track record in security, property, and facilities management
Nationwide service: Supporting businesses across Greater London and the wider UK
Circle Alarm Systems are trusted by construction, logistics, and property managers who need reliable, real-time security with minimal downtime.
Protect what matters most.
Circle Alarm Systems bring together advanced detection, AI-powered monitoring, and complete operational control — all from one trusted UK provider.