Welcome

Intruder Alarm Systems are Sheffield and Chesterfields 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

This new back-lit external sounder is now available.
and demonstrates you have a fully tested, working system installed, providing a powerful visual deterrent to any potential intruders