- Trusted by over 7,600+ customers
Intruder Alarms - Early detection. Immediate response. Stronger protection
A forced door. A smashed window. An empty building overnight. It only takes minutes. Intruder alarms give you those minutes back.
End-to-end services
From site survey and design to installation, commissioning, testing and ongoing maintenance — we manage every stage.
BAFE-accredited engineers
All fire alarm system design, installation and servicing is delivered by fully qualified professionals aligned to BS 5839 and UK fire safety regulation.
Compliance
Clear documentation, UK standards compliance and practical guidance tailored to your building and fire risk.
Nationwide coverage
Our teams are based across the UK — ensuring we can deliver fire alarm installation near you with responsive support.
Intruder alarm systems built around real-world risk
Every site has vulnerabilities. Rear access points. Isolated offices. High-value stock rooms.
We assess them properly.
Our engineers carry out a detailed site survey before designing an intruder alarm system that aligns with your building layout, operational hours and insurance requirements. No unnecessary devices. No blind spots. Just protection where it counts.
From single premises to national estates, we deliver intruder alarms that scale with your business.
- All services are carried out by qualified professionals
- We will always put you first to meet your needs
Our Intruder Alarm Services
At Mitie Fire & Security, we design, install and maintain intruder alarm systems that detect threats fast and trigger the right response – protecting your people, property and reputation 24/7
- Wireless intruder alarm systems
Flexible protection. Minimal disruption.
A wireless intruder alarm system uses encrypted radio signals to connect sensors and control equipment. It’s ideal for occupied buildings, heritage sites or environments where cabling would be disruptive.
Wireless systems install quickly and adapt easily as your layout changes – without compromising reliability.
- Smart intruder alarms for total visibility
Security doesn’t stop when you leave site.
A smart intruder alarm allows authorised users to arm, disarm and monitor systems remotely through secure platforms. You receive instant notifications, view event logs and manage multiple locations from one place.
Integrated with CCTV and access control, a smart intruder alarm strengthens your wider security systems strategy.
- Compliance built in
Intruder alarms must do more than detect movement. They must meet recognised standards.
Our systems are designed and installed in line with:
- PD 6662
- BS EN 50131
- Insurance grading requirements
- NSI and SSAIB certification standards
We make sure your intruder alarms protect your premises – and your compliance position.
- Installation, monitoring and ongoing support
Protection is continuous.
We provide:
- Professional intruder alarm design and installation
- System upgrades and expansions
- 24/7 monitoring options
- Preventative maintenance
- Emergency engineer support
Regular servicing keeps your intruder alarm system reliable, compliant and ready to respond when needed.
With engineers located across the UK, our teams deliver consistent support nationwide.
What makes a modern intruder alarm system effective?
Detection is only the start.
A professionally designed intruder alarm system combines:
- Door and window contacts
- Motion detection sensors
- Glass break detection
- External sounders and visual deterrents
- Secure control panels
- Monitoring and remote signalling
The system identifies unauthorised access immediately and escalates alerts to nominated contacts or a monitoring centre – reducing damage and improving response times.
Why professional intruder alarms matter
Because prevention is always better than recovery.
A professionally installed intruder alarm system can:
- Deter opportunistic crime
- Reduce theft and vandalism
- Protect lone workers and staff
- Support insurance compliance
- Improve response coordination
Security should be proactive. Not reactive.
FAQ: Intruder Alarms
What is an intruder alarm system?
An intruder alarm system detects unauthorised access to a building and triggers alerts through sounders, notifications or monitoring centres. It typically includes sensors, control equipment and external warning devices.
Are wireless intruder alarm systems secure?
Yes. Modern wireless intruder alarm systems use encrypted communication and tamper protection to prevent interference. When installed professionally, they provide secure and reliable protection.
What is the difference between a wired and wireless intruder alarm?
Wired systems use physical cabling between components and are suited to permanent installations. Wireless intruder alarms use secure radio signals, offering faster installation and greater flexibility.
Do intruder alarms need maintenance?
Yes. Regular maintenance ensures your intruder alarms operate correctly, reduce false alarms and remain compliant with British Standards and insurance requirements.
Can intruder alarms integrate with other security systems?
Yes. Intruder alarms can integrate with CCTV, access control and monitoring platforms to create a fully connected security system that improves visibility and response.
Strengthen your security systems today
Intruder alarms are often the first line of defence. Detect early. Respond fast. Protect what matters.
Mitie Fire & Security delivers intelligent, compliant intruder alarm systems supported by experienced engineers across the UK.