Intruder Alarm Confirmation

In accordance with the ACPO Policy on Police Response to Security Systems (April 2012), all new systems will only receive a Police response to activations that are Confirmed.  It is no longer acceptable to the Police to attend upon the activation of a single detector in a building (known as an ‘Unconfirmed’ event) but requires some form of supporting evidence.


Confirming intruder alarm activations

In consideration of the ACPO Policy on Police Response to Security Systems, it is vital that a system is professionally designed to ensure that a break-in will create a ‘Confirmed’ event to ensure a Police attendance.  Similarly it is vital that the correct form of confirmation technology is employed to suit the premises being protected.

There are 3 types of intruder alarm confirmation: Sequential, Audio and Visual.

Sequential confirmations

Sequential confirmation is the most common form of confirmation and is the most effective if a system has been professionally designed.

Sequential Confirmation occurs when two separate detection devices detect an intruder within 30 minutes of each other. For example, this may typically be the triggering of a magnetic reed contact when an external door is opened, followed by a passive infra-red movement sensor detecting movement inside the building, or it could be 2 sensors either in adjacent rooms or in the same room picking up movement. In the case of a system that has 2 signal paths to the ARC, losing one of the monitored paths would count as the first activation.

Audio confirmations

Audio confirmation works by using microphone technology. Tiny, highly sensitive microphones enable the Alarm Receiving Centre to listen for suspicious noises.

For privacy reasons the microphones are only active when the intruder alarm is switched on. If someone breaks into the property, the Alarm Receiving Centre can listen in to what happened immediately before, during, and after the break-in to provide audible confirmation that there is an intruder in the property.

With an audible confirming system, any sounders are disabled while the ARC is listening in.

Visual confirmations

Visual confirmation works in the same way as audible confirmation but uses CCTV cameras instead of microphones, enabling the ARC staff to see (instead of hear) what has caused the activation. This can either be achieved by small lenses being incorporated within the movement sensors or through integrating the intruder alarm with a professional CCTV system (this may be an existing system).

Visual confirmation often the most expensive and it is vital that both the CCTV system and the intruder alarm system are designed professionally and in conjunction with each other.


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  • Mrs Wxxxxxxxx Locks Heath, Hampshire

    Very happy with the work. Engineer is a credit to your company. My son is also looking to have an alarm fitted, and would like him to do that as well.

  • Mrs Bell Camberley, Surrey

    Had CIA at previous address and were so impressed with the level of service, we had one installed at our new address!

  • Mr P Bxxxxx Stubbington, Hampshire

    Excellent explanation of system options and how to use it. Nothing was too much effort. Engineer took his time to think about the best way to overcome problems that were not apparent at the time of survey. He made suggestions as to the best way to overcome them. Everything was done and cleaned up. Thank […]

  • Mr M Sxxxxxxxxxxx Waterlooville, Hampshire

    Polite attitude of your technician, minimum disruption.

  • Mr Johnstone, Priory School Southsea, Hampshire

    Another great job – Many thanks.

  • Mr R Clist Liss, Hampshire

    They were prompt in arriving.  They were able to overcome a small problem with little fuss, and seemed technically very capable.

  • Mr D S Freezer Bognor Regis, West Sussex

    Your people have been Helpful – Honest – Informative – Perfect, Thank you.

  • Mrs J Kxxxxxx Farnham, Surrey

    Had to change pre-arranged appointment and office was very helpful.

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  • Mr P Fxxxxxx Liss, Hampshire

    The CIA technician was extremely courteous and knowledgeable, answering all my questions well.