Intruder Alarm Systems

Intruder alarm systems make intruders think twice. They are a deterrent, but also provide a warning that an intrusion is taking place either to you or through a professional monitoring centre.

Our alarm detection systems secure every aspect of your business or home, from premises, stock, to personal valuables, equipment and systems. Everyone has different needs, which is why our alarm systems are individually tailored to provide the greatest protection.

Our technology sync with other third-party solutions, integrating seamlessly with most Physical Security Information Systems (PSIM).

What is an intruder alarm?

An intruder alarm is designed to detect unauthorised entry into a building. They are used in residential and commercial for protection against theft or property damage.

Should I get an intruder alarm?

The Police recommend that businesses and homeowners should install a visual burglar alarm and also considered extra precautions, such as outside lighting and Video (CCTV) and doors are secure when not in use. has revealed over 600,000 businesses were victims of crime last year. With 109,391 burglary cases recorded, most break-ins targeting small companies across the UK.

When a break-in occurs, it has a significant impact on your business and staff morale, with business owners feeling emotional distress.

During a break-in, fast action is essential - an intruder alarm system is designed to alert you and to deter intruders from entering a property.

Need help understanding your security needs for your business?  


How does an intruder alarm work?

  • Bells-only alarms will ring/alert if a motion sensor has been triggered but will not contact anyone (such as the police or you). 
  • Dialler intruder alarms will automatically call you, or the nominated person when the alarm is triggered.
  • Smart alarm systems will message your smartphone or a designated person.
  • Monitored alarm systems - a Monitoring Centre can act or call the police if the alarm goes off.

retail intruder

What type of intruder alarm should I choose?

There are two types of Intruder Alarms:

Wireless Alarm System

A wireless alarm system incorporates Wi-Fi or Bluetooth communication instead of physical wiring and is battery-powered. This system relies on a smart wireless signal.

Hardwired Alarm System

Uses physical wiring running throughout your business or home to relay information back to the central control panel.

Should an alarm installer belong to any professional body?

Yes, it is recommended to have an accredited company to install your intruder alarm. STANLEY Security is accredited with the below organisations:

Intruder detection alarms
NSI Gold approved


Intruder Alarms 

STANLEY Security installs, monitors and maintains a range of alarm systems designed to deter potential intruders from your premises.

We install control panels from leading alarm manufacturers such as Honeywell, PACOM, Texecom, Bosch and UTC. The nature of our platforms allows open protocol.

NSI Gold approved organisation

As an NSI Gold member, all our systems comply with the latest industry standards and tailored to your individual needs.

The benefits of NSI Gold approved organisation include:

  • Help you meet your insurance and legislation obligations
  • Stanley Security is inspected twice a year to ensure we maintain standards in both the quality of installation and how we run our business
  • Operating a 24-hour call-out service and respond within 4 hours
  • Able to complete a thorough security survey of your property
  • You will receive a Certificate of Compliance for your system
  • Meet all relevant British and European Standards
  • Operating to the highest level of business excellence to the industry-specific ISO 9001 Quality Management System.
Intruder Motion Sensor Systems
Eliminating false triggers

Intruder Motion Sensor Detectors

Motion detectors are an essential part of your security system. The Passive Infrared sensors (PIR) are designed to detect any signs of movement that could be caused by an intruder.

Motion detectors can be wired or wireless and connected to your intruder alarm control panel. The devices are located at the top corner of rooms of entry points, the alarm activates if they detect any movement.

Our sensor detector range covers multiple applications and delivers excellent performance while virtually eliminating false triggers such as strong drafts, animals and moving objects.

Intruder Motion sensor solutions include:

  • Motion Passive Infrared (PIR)- five layers of detection including look-down zone
  • Photoelectric Beam- dual beam detection improves false alarm immunity
  • Seismic Detectors - 24-hour surveillance of vault walls and doors, safes, night safes, and automatic teller machines
  • Glass break detectors - Microprocessor-based sound analysis technology (SAT)
Audio verified alerts
Better protection for your business

Audio Verified Alerts

While traditional alarm systems can be very effective, advanced audio alarm systems from STANLEY Security can provide even better protection for your business. 

Unlike conventional alarms, Sonitrol's verified alarms are sound-based – not motion-based – so when an alarm is triggered, our monitoring professionals can listen and watch-in to determine whether a break-in is in progress, or whether a false alarm has occurred. If it is a break-in, we immediately dispatch police and relay real-time information to the responding officers. If it is a false alarm, we simply reset the system without bothering you or the police. 

Rather than relying on intruders to break a contact or trip motion sensors, Sonitrol systems activate whenever any unusual noises are detected within your facility. When activated, they send audio feeds to our highly trained monitoring professionals, who can verify that a break-in is in progress or determine if it’s a false alarm.

Audio verified benefits include:

  • Ability to identify intruders who enter the building 
  • Critical information for responding to law enforcement
  • Higher apprehension rate than conventional security systems
Video verified alerts
Priority Police response

Video Verified Alerts

For faster police response times and to minimise false alarms, STANLEY Security offers a range of remote verified intrusion alarm options.

These enhanced alarm systems have integrated video surveillance, providing more insight into the alarm activity. Verified security solutions allow our monitoring professionals to confirm an intrusion attempt is taking place, reducing the occurrence of false alarms and leading to faster police response.

When an alarm event is triggered (such as a motion detector, door sensor, or glass break sensor) the associated video clip of the activity recorded by your security cameras is sent to our Monitoring Centre to confirm that an intrusion is in progress visually. Once an alarm is verified with the video feed from your security camera system, we will immediately alert authorities to the situation.

Decrease business losses by:

  • Priority Police response
  • Decreased business Losses 
  • Reduced disruption to your business
  • Documented events for evidence
Outdoor perimeter security systems for business 
Minimise disruption to your business

Outdoor perimeter security 

Accurate outdoor detection of Intruders in darkness and adverse conditions

STANLEY thermal perimeter detection uses state-of-the-art thermal imaging technology (sometimes referred to as thermal cameras) combined with intelligent analytics to help protect your organisation from outdoor intrusion, theft and vandalism. 

This technology provides improved protection of your outdoor assets as opposed to outdoor security camera systems and other detection methods for businesses.  Help keep your outdoor assets safe and identify threats prior to an indoor break-in through this powerful, proactive solution.

Outdoor security systems benefits include:

  • State-of-the-art outdoor thermal sensors can detect human intrusion into unauthorised areas
  • Intruders are unable to hide as their thermal energy (body heat) can be identified the moment they breach your perimeter
  • Ideal for detection outdoors, in darkness, harsh weather or obstructed views
  • Analytics can discriminate between human intruders and environmental “noise” such as animals or inanimate objects
  • Designed to eliminate common factors that can trigger false alarms with other systems 
intruder alarm system grades
European Standards EN 50131

Which intruder alarm system grade is suitable for my business?

The grade of the intruder alarm system is important if you are depending on the alarm system for insurance cover. Insurance companies may specify a grade of the system depending on the risk of protection. 

Intruder alarm systems in the UK must conform to  European Standards EN 50131

The EN 50131 defines four grades of Intruder alarm system. The grade is measured by how resilient the alarm system is against intrusion and break-ins

The four grades of Intruder alarm system are:

  • Grade 1: Intruders are expected to have little or no expertise.
  • Grade 2: Intruders are expected to have more knowledge and some specialist equipment.
  • Grade 3: Intruders will have both comprehensive knowledge and portable electronic equipment.
  • Grade 4: Intruders have the expertise, access to good equipment and planned intrusion.

Need help understanding your security needs for your business?



What our customers say…

STANLEY really knows their security and has really helped us out.
Mr Byrne, Hodge Clough School
Thank you for sorting all the fire servicing at Falmer and now looks on trackfor easy servicing in future.
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Great work by you and the team. From a business perspective there was minimal disruption 
and migration has finished way ahead of timescale (and budget). Well done and thank you!
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