- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 02 May 2018
Alarms may be hard wired or battery operated, and may be interconnected so that if one detector is triggered, all interconnected alarms sound.
The most common causes of false alarms are:
Multi-sensor alarms (or multi-criteria alarms) detect more than one fire phenomena, for example optical and heat detection. They may also include other detection capabilities, such as carbon monoxide detection.
Research by BRE, published in 2014, suggested that replacement of existing detectors in Kings College London with intelligent multi-sensor detectors could reduce false alarms by 69%, and that in the general building stock, the increased use of multi-sensor detectors may avert false alarms from common causes such as cooking fumes, steam and so on. Ref The causes of false fire alarms in buildings.
Intelligent multi-sensor alarms are independently addressed and continuously monitored to verify correct operation. They may also have adjustable sensitivity settings and drift compensation to account for environmental conditions. This can help identify when an alarm is genuine, as opposed to resulting from a maintenance issue or incorrect setting.
 Find out more
 Related articles on Designing Buildings Wiki
- Carbon monoxide.
- Carbon monoxide detector.
- Fire detection and alarm system.
- Heat alarm.
- Intruder alarm.
- Ionisation smoke alarms.
- New requirements for fire detection and alarm network systems IP 12 13.
- Optical smoke alarm.
- Smoke detection in high ceiling spaces.
- Smoke detector.
- The causes of false fire alarms in buildings.
Featured articles and news
Brokenshire launches an implementation plan for the recommendations made by Dame Judith Hackitt.
BSRIA publication provides guidance about the capture and analysis of big data.
Gove launches a waste and resources strategy for England.
Only 9% of construction workers are 24 or younger.
Blighting local areas, preventing investment and and encouraging anti-social behaviour.
Sharing knowledge about the conservation of the built and historic environment.
CIOB launches a call to improve quality in the built environment.
Vastint gets permission for a 6.6 hectare site to support the expansion of Leeds’ city core.
One of the Isle of Man’s best 1960s buildings.
Using renewable energy in developing countries - QSAND and Loughborough University Research collaboration.
From frost damage to sulphate attack, common causes of defects in brickwork.