Fire Alarm Remote Signalling and Alarm Receiving Centres
A fire alarm sounding in an empty building at 2am is only useful if someone finds out. Remote signalling is what closes that gap — it sends the fire and fault signals off-site so a response can be arranged whatever the hour. This guide explains how remote signalling works, what an alarm receiving centre does, and why monitored, dual-path connections matter.
The theme is reliability: the value of remote signalling depends entirely on the path being there when it is needed, and on failures being noticed.
Who this is for
This is for competent fire alarm engineers who install or maintain remote signalling and ARC connections. The experience level assumed is competent engineer. Use it for the principles; the signalling arrangement and resilience level come from the fire risk assessment, BS 5839-1, the transmission equipment standards and the monitoring contract.
What remote signalling is
Remote signalling automatically transmits fire and fault signals from the control panel to a remote location, typically an alarm receiving centre, so that a response can be arranged even when the building is unoccupied. It uses alarm transmission equipment connected to the panel, sending signals over a monitored path — commonly IP, cellular, or both. Whether a building has remote signalling, and to what standard, follows the fire risk assessment and the recommendations of BS 5839-1.
The alarm receiving centre
An ARC is a monitoring centre that receives signals from remotely-signalled systems and acts on them to agreed procedures — for example alerting a nominated keyholder, or the fire and rescue service where that is appropriate and agreed. The panel signals the ARC through the transmission equipment; the ARC provides the human response. What the ARC does with a signal is governed by the monitoring contract and the relevant standards, not by the fire alarm system itself.
Dual-path and resilience
Any single signalling path can fail — a cut cable, a network outage, a cellular blackspot. Dual-path signalling uses two independent paths so that if one fails the other still carries signals, and the failure is itself reported. Higher-risk premises generally warrant more resilient arrangements; the appropriate level of signalling resilience for a building follows the risk assessment and the transmission equipment standards. This is a design decision, not a default.
Path monitoring
The whole point of remote signalling is undermined if the path can fail silently. The transmission equipment and the ARC therefore monitor the connection so that a loss is detected and reported as a fault. During service, confirming that path monitoring works — that pulling or simulating a path loss produces the expected fault indication and ARC notification — is one of the most valuable checks you can make. From field experience, unnoticed path failures and expired SIMs or lapsed monitoring contracts are recurring real-world problems.
Common points to check
Recurring issues include a signalling path that has quietly failed, monitoring contracts that lapsed without anyone realising, and single-path arrangements on premises that have grown to warrant dual path. Verifying the signalling path and its monitoring against the design, and confirming the monitoring contract is current, are worthwhile on any signalled system.
When not to rely on this alone
When not to use this article: do not use it to set the signalling category, choose transmission equipment, or define ARC response for a specific building. Those come from the risk assessment, BS 5839-1, the transmission equipment standards and the monitoring contract, applied by competent professionals.
Relevant standards
Remote signalling recommendations sit in BS 5839-1, a code of practice, with alarm transmission equipment covered by BS EN 54-21, a product standard. The legal duty to provide and maintain an effective system in most non-domestic premises sits under the Regulatory Reform (Fire Safety) Order 2005. Separate the legal duty from the recommended methods when advising a client, and always work to current editions and the monitoring contract.
Professional disclaimer
This is an educational and workflow resource for competent engineers and does not replace the current British Standards, the transmission equipment documentation, the monitoring contract, or competent judgement. Verify signalling and ARC arrangements against current documentation.
Related documentation
Use this with the current BS 5839-1 and BS EN 54-21, the transmission equipment documentation, and the monitoring contract. Record signalling-path and monitoring tests in the service documentation.