Existing clients: 0208 207 0900

New enquiries: 0207 887 2073

Existing clients: 0208 207 0900

New enquiries: 0207 887 2073

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The very best standards of fire equipment & service We won't be beaten on price or service

  • Exceptional standards of work
  • Your one stop for all fire & security needs
  • Over 10,000 systems installed
  • Aftercare service guaranteed
  • We warrant that, for a like-for-like quotation, we won't be beaten on price
  • We do not use sub-contractors; all our engineers are full time employees of the company

Call us today on 0207 887 2073

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Smoke detectors Servicing London & Home Counties

Often providing the earliest alert in the event of a fire, smoke detectors are a vital component of all fire safety systems, saving thousands of lives every year.

Here at AAI Security Systems, we provide a wide range of NSI-approved smoke detectors that have the flexibility to fit into any fire alarm setup, with ionization, optical and combined detectors available for installation and maintenance by our team of experts.

Whether a home, office, warehouse, retail environment or other commercial location, AAI are available to carry out free surveys to determine the smoke detector most suited to your needs, before providing full installation.

NSI Fire Gold accreditation

The benefits of our fire alarm systems include

We are an accredited fire alarm company »

We have a NSI Fire Gold standard – the industry's highest standard of fire alarm design and installation of systems.

Our latest alarms, detectors and lighting systems offer 24/7 peace of mind »

We offer fully certified systems under the National Security Inspectorate, our alarms may not prevent a fire from starting – however they are proven to GREATLY reduce the risk of injury or loss of life.

Keeping your smoke detectors in full working order is vital to upholding fire safety, which is why AAI provide full servicing as part of our fire alarm system maintenance across the region.

With accreditation from all relevant industry associations, including NSI, FSA and BAFE, you can rely on AAI Security Systems to carry out the highest quality service every time. Get in touch with our team today to find out more about our smoke detectors.

We cover London & the home counties including the following areas:

Central London

North London


  • Rickmansworth
  • Bushey
  • Watford
  • St.Albans
  • Hemel Hempstead
  • Pottersbar
  • Hatfield
  • Hertford
  • Hoddesden
  • Waltham Abbey


  • Stanmore
  • Edgware
  • Harrow
  • Pinner
  • Ruslip
  • Northwood

West London


  • Harlow
  • Epping
  • Loughton
  • Chigwell
  • Woodford
  • Chelmsford