Security Installation

Intruder Alarm Services

Service Engineers

The National Security Inspectorate.

Intruder Alarm Systems

(01246) 434349

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Intruder Alarm Systems are Sheffield and Chesterfield's premier National Security Inspectorate (NSI) Gold company - independently approved installers of both monitored and audible security solutions to the most demanding domestic and commercial customers.

We have over 25 years experience in the installation, service and repair of all types of alarm system.

Intruder Alarm Systems can help you secure your site quickly, we are BT Redcare partners, so able to offer the complete Redcare range of remote signaling devices - often within 48hrs. And if you require police response? - we can deal with that too.

Latest News

The Alarm Package The Alarm Package
We're very pleased to announce that we are now providing a fully installed alarm package for only £320 plus VAT.

The New Back-lit Sounder Back-lit External Sounder
Our new back-lit sounder is now available. This sounder demonstrates you have a fully tested, working system installed, which provide a powerful visual deterrent to any potential intruders.