What happens inside an Alarm Receiving Centre (ARC)

Security systems are great for monitoring premises on their own, but if you want to extract the most out of these systems and get superior levels of security, then an Alarm Receiving Centre or ARC is the way to go.

ARCs offer professional monitoring where a team of security experts watch over properties remotely. There are different types of security systems for domestic and commercial use, and both of them can be monitored by professionals remotely, giving the users better peace of mind and security.

How do ARCs work, and how do they benefit commercial and domestic users? Read below to learn more about professional monitoring and what happens inside an Alarm Receiving Centre:

PROFESSIONAL SECURITY SYSTEM MONITORING

All security systems are used to monitor spaces; however, the main difference between a professionally monitored system and a regular system is that in professional monitoring, you get a dedicated team of people looking after your property.

This means that these teams have eyes on the premises 24/7 and can immediately report issues as they detect them, lowering the chances of false alarms and significantly improving overall safety.

Professional monitoring can be done on-site and off-site.

On-site monitoring involves a team of people who manage the security system while being on the premises. These teams can be allotted a space for surveillance and can monitor all the security devices, including the alarms and CCTV cameras, in the system from one central location.

On-site monitoring is a great option for commercial properties because it allows the team to quickly respond to threats within minutes.

Off-site monitoring, also called remote monitoring, is an excellent option for people who do not have a dedicated space for personnel and gear. In fact, off-site monitoring is by far the most popular choice among small business owners and even residential property owners.

Off-site monitoring involves the use of advanced communication technologies and IP-enabled security hardware. This system works by sending the data from the security systems in real-time to a server where it can be accessed by anyone with a proper internet connection and authentication.

This technology enables users to quickly tap into the security dashboard of the system via a mobile or desktop app and review the data. The great thing about this technology is that it is seamless and provides a real-time viewing experience.

When monitored professionally, the data from the security system is directly sent to a secure Alarm Receiving Centre (ARC) where a team of professionals can analyse it in real-time and keep your property safe.

If an event is suspected or confirmed, the professionals can activate other security measures in the property as well. For instance, if the CCTV captures footage that is flagged as suspicious, the ARC can trigger other integrated security devices, such as access control systems and alarm systems. They can, of course, also send out prompt notifications to keyholders and the police.

HOW DOES AN ALARM RECEIVING CENTRE (ARC) WORK?

An Alarm Receiving Centre (ARC) is equipped with monitoring equipment and state-of-the-art signal receiving hardware that helps security professionals monitor security systems in real-time.

There are multiple ways the data is received at the centre. Here are the most common ways:

• Broadband / IP
• GSM / 4G backup
• Dual-path signalling (for higher-grade systems)

Broadband or IP signalling is done over a regular internet connection, where the data is continuously streamed to a server. GSM/4G backup is also used to support the quality and consistency of the connection, where if the regular internet connection is disrupted, the 4G backup system can take over.

Many ARCs go with a dual-path signalling protocol to help them operate and monitor properties 24/7. This redundancy allows them to offer greater coverage and help property owners get continuous security throughout the year.

WHAT HAPPENS INSIDE AN ALARM RECEIVING CENTRE (ARC)?

An Alarm Receiving Centre (ARC) may look unassuming from the outside, but inside it is full of surveillance and networking hardware that enables the security professionals to keep a watchful eye on their clients.

ARCs have multiple rooms that are assigned to different properties depending on their specific security requirements and protocols. Larger properties may be assigned larger teams and more resources, while simple setups may be monitored by just a few professionals.

These professionals have a “pulse” on the property and are tapped directly into the security system. However, with modern technologies, newer and more modern monitoring services, like the ones offered by Calder Security, use automation and surveillance techniques that enable smoother and more accurate monitoring.

For example, instead of just professionals monitoring a property, there are also software tools and even artificial-intelligence-enabled tools that can help these professionals do their jobs even better.

Your property will typically be monitored via screens and a unified dashboard that can alert the professionals if the system or personnel pick up an intrusion or suspicious activity.

Here is a step-by-step of what goes on inside an ARC:

Alarm Signalling

If there is suspicious activity on your property, the ARC will get a notification on its centralised dashboard.

Security personnel can then access the property and get the following information:

• Site details (address, business type)
• Alarm type (intruder, fire, PA, tamper, etc.)
• Zoning info (e.g., “rear door contact”)
• Response instructions
• Keyholder details

These details enable the operators to not just know when something happens but also allow them to know exactly what is happening and where.

Verification

Verification is what allows Alarm Receiving Centres to be so crucial in today’s modern world. ARCs not only help you catch threats on time, but they also help conserve city resources.

When an alarm is triggered, security personnel go through not just one data feed but multiple feeds, such as the CCTV, pressure alarms, door alarms, and the access control system.

If most or all these systems flag a suspicious event, then the operators dispatch emergency services or the police, depending on the type of threat.

Operators can use audio verification by listening to the CCTV or alarm system, or they can use security footage and the data from multiple sensors to detect threats. This approach significantly cuts down on false alarms and only alerts authorities when an event is confirmed.

This avoids burdening local authorities and may even help you keep your premiums down. Keep in mind that if your property has more than two or three false alarms in 6 months, then your premises may be blacklisted. In this case, authorities will not respond to alarm threats until you address the false alarm issues.

Decision Making

ARCs ensure that security decisions are made promptly. Think about it, if you self-monitor your property and have no training, then chances are that you might freeze in the event of a security breach or take longer to decide on the right course of action.

ARCs take away this problem by following a strict protocol during confirmed events. Based on verification and instructions, the operators will likely contact keyholders or notify police or emergency services, depending on the threat.

If the event is unclear or likely false, then the ARC operators will likely first call the premises to notify them. If the event turns out to be nothing, then it will be marked as a false alarm, and no call will be made to the authorities.

This escalation and de-escalation process is what makes ARCs so great. They can help you avoid false alarms and only call in the authorities when needed.

Paper Trails

One other benefit of ARCs is that they offer a well-documented paper trail that can help you fulfil legal obligations and even company policies. Whether it is a commercial or residential property, it is always a good idea to log every security action in and around your property.

ARC operators generate a document that covers everything about a confirmed or even suspicious event.

This document contains information like:

• Time alarm received
• Operator actions
• Calls made
• Outcome

This audit trail is necessary for commercial clients because it enables them to maintain transparency and accountability. For residential users, this trail can immensely help during insurance settlements where insurers may ask the property owner for various proofs.

This documentation is also a requirement for the ARC since they too must comply with standards such as the BS 5979 (Category II) or the newer BS EN 50518.

365 Security

ARC operators work in shifts to ensure that your property is covered 24/7/365!

The centre itself employs a lot of security measures to keep sensitive security blueprints and data secure. The centre also has an extensive network and even power redundancies so that all clients can have uninterrupted monitoring.

However, it isn’t just all about human monitoring. As mentioned above, ARCs also rely on various technologies to help them keep an eye on their clients’ properties.

ARCs are seeing a huge increase in the usage of artificial intelligence in 2026. Tools such as Machine Learning and advanced algorithms are being deployed into the monitoring process to help catch threats quickly and reliably.

For example, artificial intelligence is being used to differentiate between animals and humans. Furthermore, these tools can also be used to enhance dark or blurry images and even compare past trends to determine the validity of the threat.

Together with human surveillance, operators are better equipped to provide more comprehensive security to their customers and make ARCs a no-brainer for high-risk areas.

SECURITY SYSTEM MONITORING COSTS

Now that we have discussed everything about ARCs, let’s move over to the more important question for property owners: how much does this service cost?

The good news is that these services have generally become more affordable, but the total cost will depend on the size of the security system in your property and its complexity, among other things.

However, the cost alone should never deter you from opting for professional monitoring. We’ve explained the benefits of this service throughout this guide, and while it may warrant additional charges, these costs are well worth it in the long run.

With crime on the rise, there is no doubt that you should always have a pair of extra eyes and ears on your commercial or residential property.

The following are the factors that play a role in how much you may be required to spend to have an Alarm Receiving Centre (ARC) monitor your property:

• The size and location of the property
• The complexity of the security system
• Monitoring type

The size and location of your residential or commercial property will be the main determinant of the total cost, as it will directly affect the size of the security system, its complexity, and the level of monitoring required by the ARC.

A bigger property in a high-risk area would naturally need a more expansive security system compared to a smaller one in a safer neighbourhood. Also, commercial properties generally require more complex installations than homes, which translates into the total cost of the system, including professional installation and monitoring.

The cost of a monitored security system is directly proportional to the number of security devices in the system and their level of complexity. A simple system with a singular alarm and CCTV camera would require much less in terms of monitoring operatives, compared to a system with several alarms, CCTVs, and advanced access control.

Last, but not least, there are different types of monitoring services (keyholder and police monitoring) that you can opt for depending on the level of security you require.

Most professional monitoring services offer different monthly or annual packages/plans for their customers based on the type of monitoring and any extra features, such as emergency keyholding and rapid response. The average monthly charges may start from £18 to £25 and go up depending on the monitoring plan you go with.

WHY CHOOSE CALDER SECURITY?

For top-notch security and best value for your money, we recommend hiring a professional security company such as Calder Security.

At Calder Security, we provide a comprehensive range of security solutions that include not just professional installation but also monitoring, maintenance, and repair services.

We are members of the Master Locksmith Association (MLA), approved members of the Security Systems and Alarms Inspection Board (SSAIB), and also conform to all the relevant British and EU Standards. We follow all the best practices in the industry and install only high-quality, state-of-the-art security systems.

We offer various levels of monitoring via a 24-hour monitoring centre manned by security professionals who perform checks to confirm the alarm, notify the keyholder(s), and, if appropriate, alert the police.

We understand the importance of regularly maintaining security systems since the inability to do so might result in serious faults and consequent vulnerabilities in your property’s security.

We provide professional maintenance checks and reminders for when the checks are due to help you stay compliant with the law and work fast to restore your security systems to excellent condition.

We offer a 24-hour call-out service for customers and can also repair systems not installed by us. Our engineers are highly skilled and can restore faulty systems to full working order in one visit.

Contact us here or call us at 0800 612 9799 to talk to our experts for more information on security system monitoring and what happens inside an Alarm Receiving Centre (ARC).

Photo by Anthony DELANOIX on Unsplash