Advanced Protection for High-Risk Environments
For businesses and sites where security is a top priority, Controlled Ltd offers Grade 3 intruder alarm systems built to the highest standards. These systems are specifically engineered to secure properties with a higher risk of targeted theft or intrusion, such as retail outlets, commercial premises, financial institutions, warehouses, and industrial facilities.
Unlike basic alarm setups, our intruder alarm systems feature anti-masking detectors, tamper-resistant components, and multi-layered detection. These features ensure that your property remains protected against even the most determined threats.
Controlled Ltd designs and installs both wired intruder alarm systems and wireless intruder alarm systems, providing the flexibility to meet the demands of your environment and long-term security plan.
Key Benefits of Grade 3 Intruder Alarm Systems
Intelligent Detection
Advanced motion and vibration sensors offer fast, accurate detection while helping to minimise false alarms.
24/7 Monitoring Support
Our systems can be linked to ARC (Alarm Receiving Centres) to alert keyholders or emergency responders instantly.
Anti-Masking Technology
Sensors can detect attempts to block or tamper with them, a crucial feature in high-risk environments.
Secure Communications
With dual-path signalling, alarm messages are transmitted reliably, even if one channel is compromised.
Scalable and Flexible Design
Our intruder alarm systems are suitable for both single-site and multi-site operations, with room to expand.
Integrated Security
Controlled goes beyond alarm installation. We can integrate your intruder alarm system with other technologies, including CCTV, access control, building automation, and fire detection systems for a unified solution.
Controlled Ltd designs every alarm system with future-proofing in mind, ensuring your investment continues to deliver value over time.
Applications Across Industries
Our Grade 3 intruder alarm systems are ideal for high-risk environments, including:
- Retail and high-street chains
- Warehouses and logistics facilities
- Commercial offices and business parks
- Banks and financial institutions
- Industrial plants and utility sites
Whether you’re protecting high-value assets, sensitive data, or staff safety, our systems are tailored to help meet your security requirements and insurance standards.
Controlled’s expert engineers work closely with you to assess your security needs and provide a tailored solution. We offer:
- Wired intruder alarm systems for high-security environments requiring maximum reliability
- Wireless intruder alarm systems for quicker installation with minimal disruption
- Flexible systems that integrate with CCTV, access control, and fire detection
- Monitoring and maintenance options for ongoing compliance and peace of mind
Whether you need full perimeter protection or internal motion detection, our intruder alarm systems are built to adapt to your property and protect it around the clock.
Why Choose Controlled?
With decades of experience, Controlled Ltd is a trusted provider of high-spec intruder alarm systems across the UK. We do more than install alarms, we build long-term security partnerships.
From site assessments and risk analysis to installation, compliance support, and maintenance, we provide complete, end-to-end service. Whether you need a wired intruder alarm system for a large facility or a wireless intruder alarm system for easier setup, we’ll design the best-fit solution.
Our experienced engineers and support teams ensure that your system performs at its best and remains compliant with UK regulations. Feeling not ready to buy from us yet? Explore real success stories from our case studies to see the difference intelligent fire safety makes.
SSAIB
This certification ensures that companies meet the highest standards for intruder alarms, CCTV, and access control systems.
BAFE SP203-1
This certification guarantees that companies adhere to the best practices for designing, installing, commissioning, and maintaining fire alarms.
Safecontractor
This accreditation verifies a company's commitment to health and safety standards, ensuring a safe working environment.
ISO 9001:2015
This certification demonstrates the company's dedication to quality management, ensuring consistent delivery of products and services.
BSI
A leading global certification body that provides a wide range of standards and certifications across various industries.
BS5839 P1 2017 Audit
A comprehensive assessment to verify the company's compliance with the BS5839 P1 standard, which outlines requirements for fire detection and alarm systems in buildings.
Recognised
by the best
Controlled.co.uk boasts a strong commitment to quality and safety, backed by a suite of industry-recognised certifications.
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FAQs About Intruder Alarm Systems
What is a Grade 3 intruder alarm system?
It’s a high-security alarm designed to protect against professional intruders using advanced tools or techniques. These systems are required for higher-risk commercial properties.
How is a Grade 3 alarm different from a Grade 2?
Grade 3 systems offer enhanced features such as anti-masking, dual-path signalling, and more sensitive detectors, making them suitable for sites with greater security requirements.
Are wired intruder alarm systems better than wireless ones?
Wired systems offer maximum reliability and are ideal for larger or permanent setups. Wireless systems are easier to install and ideal where cabling is difficult. We offer both options depending on your site and needs.
Can I monitor my alarm remotely?
Yes. We offer 24/7 remote monitoring via ARC, and most systems also allow mobile app access so you can receive alerts and monitor activity in real time.
Can the system be integrated with CCTV or access control?
Absolutely. Our intruder alarm systems can be fully integrated with other security systems for a complete solution.
Is a Grade 3 alarm required by insurance?
Many insurers require a Grade 3 system for high-risk premises or to meet policy conditions. We can work with your insurer to ensure compliance.
What’s the installation process like?
We begin with a free site survey and consultation. Then we design the system, install it with minimal disruption, and provide full training and documentation.
Does the grade 3 Intruder Alarm system work during power cuts?
Yes. All our systems come with backup battery power and redundant communication paths to ensure continued operation during outages.
How often does my intruder alarm system need maintenance?
For commercial systems, it’s recommended to have maintenance at least twice a year. We offer planned maintenance packages to ensure compliance and performance.
Reinforce your Facilities with Confidence
Ready to upgrade your workplace with robust grade 3 intruder alert systems? Discover how Controlled Ltd can tailor industry-grade alert systems that fit your building’s unique needs.