Monitored Alarm Systems in Cornwall
A bells-only alarm makes noise. A monitored alarm system makes sure someone actually responds. MC Fire and Security installs and upgrades monitored burglar alarm systems across Cornwall — giving your home or business 24/7 professional monitoring so an activation isn't just a siren that neighbours ignore.
What Is Alarm Monitoring?
A monitored alarm is an intruder or fire alarm connected to an Alarm Receiving Centre (ARC) — a 24/7 staffed monitoring station — that contacts you, your nominated keyholders, and emergency services when triggered. Monitored systems require dual-path signalling (typically IP + GSM) to BS 8243, and a Police URN for direct police response.
When a standard bells-only alarm goes off, it relies on someone nearby hearing it and calling the police. In practice, most activations get ignored — especially in rural Cornwall where your nearest neighbour might be half a mile away.
A monitored alarm connects your system to an Alarm Receiving Centre (ARC). When the alarm activates, the ARC is notified immediately and follows a pre-agreed response plan — calling keyholders, dispatching a security response, or in some cases contacting the police directly.
Levels of monitoring:
- Self-monitoring — the system sends alerts to your phone via an app. You decide what action to take. Cheapest option, but relies on you being available and making the right call under pressure.
- ARC monitoring (professional) — a 24/7 staffed monitoring centre receives the alarm signal and takes action according to your response plan. This is the standard for commercial properties and higher-security residential installations.
- Police response monitoring — the ARC contacts the police directly on activation. This requires the alarm system and installer to meet specific accreditation standards (typically SSAIB or NSI). Not all systems or installers qualify.
Upgrading from Bells-Only to Monitored
If you already have an intruder alarm system installed, upgrading to monitored doesn't always mean replacing the whole system. In many cases, Mitch can add a monitoring communicator to your existing alarm, connecting it to an ARC via your broadband or mobile network.
The upgrade typically involves:
- Installing a digital communicator (IP or dual-path for reliability)
- Configuring alarm zones and response protocols with the ARC
- Testing the signal path to confirm reliable communication
- Setting up keyholder contact details and response procedures
For new installations, Mitch designs the system with monitoring built in from the start — ensuring the right grade of equipment and signalling for your chosen monitoring level.
Why Choose MC Fire for Monitored Alarms
Mitch installs intruder alarm systems to BS EN 50131 standards across Cornwall. He'll advise honestly on whether monitoring is right for your situation — not everyone needs it, and he won't upsell something that doesn't make sense for your property.
Most break-ins happen when nobody is home or in the building. According to ONS 2024 burglary data, 73% of UK burglaries occur during weekday daytime hours when commercial premises are closed and domestic premises are unoccupied — making local-only alarms ineffective without external monitoring.
Source: Office for National Statistics, 2024 burglary data.
(Photo coming soon)About the engineer
Mitch Clementson — Founder + Engineer
Mitch has spent 16 years installing fire and security systems across Cornwall — from listed cottages in Helston to commercial premises in Truro. Every job he quotes, he installs. Every system he commissions, he services. There is no subcontracting, no surprise team, no "the engineer will be in touch" — you call, he answers.
- BS 5839-1:2025 — Commercial fire alarm design, installation, commissioning
- BS 5839-6 — Domestic fire alarm grading
- BS EN 62676 — CCTV system standards
- BS EN 50131 — Intruder alarm grading
- BS 5266-1 — Emergency lighting code of practice
- BS 5306-3 — Fire extinguisher commissioning and servicing
- British Fire Consortium member (independent standards verification)
"ARC monitoring is the difference between hoping someone hears your alarm and knowing the police are on their way. We dual-path everything — IP plus GSM — so cutting one line doesn't cut the response."
— Mitch Clementson, Founder of MC Fire & Security
Frequently Asked Questions
What is the difference between monitored and bells-only alarms?
A bells-only alarm sounds a siren at your property when triggered — that’s it. No one is notified unless someone nearby hears it and acts. A monitored alarm sends a signal to an Alarm Receiving Centre (ARC) staffed 24/7, which then follows a response plan — calling you, dispatching a keyholder, or contacting the police. Monitoring means someone always knows when your alarm goes off.
Can I get police response to my alarm?
Police response requires your alarm system and installer to be accredited to specific standards — typically through SSAIB or NSI. The system must also be registered with the police and issued a Unique Reference Number (URN). Without these, the police won’t respond to alarm activations. Call Mitch on 07498 819185 to discuss what level of response is achievable for your property.
How much does a monitored alarm cost?
The alarm system itself typically costs the same as a bells-only installation — anywhere from £500-£2,500+ depending on property size and system complexity. The monitoring service is an ongoing subscription, usually £15-£40 per month for ARC monitoring depending on the response level. Mitch will provide a full breakdown after a free site survey.
Do monitored alarms reduce insurance premiums?
Yes, in most cases. Insurers view monitored alarms as significantly more effective than bells-only systems. Many commercial policies require professional monitoring as a condition of cover. Domestic policies often offer premium reductions of 5-15% for monitored systems. MC Fire and Security provides all documentation your insurer needs to apply any applicable discounts.
Can I upgrade my existing alarm to monitored?
In many cases, yes. If your current intruder alarm system is in good condition and meets the appropriate grade under BS EN 50131, Mitch can often add a monitoring communicator without replacing the whole system. He’ll inspect your existing setup, confirm compatibility, and advise on the most practical route to monitoring without replacing what already works. Call 07498 819185 for a free assessment.
What happens when my monitored alarm is triggered?
When your monitored alarm activates, the signal is sent immediately to the Alarm Receiving Centre (ARC). The ARC operator verifies the activation — checking for false alarm indicators and reviewing any camera feeds if available. If the activation is confirmed as genuine, they follow your pre-agreed response plan: contacting your nominated keyholders in sequence, dispatching a security response, or in the case of police-response monitoring, contacting the police directly with your Unique Reference Number. The entire process from activation to response dispatch typically takes minutes, not hours.
*Last updated: 2026-05-13*
Get a Free Site Survey
Want to upgrade to a monitored alarm? Call Mitch on 07498 819185 or send a message on WhatsApp.