Picture this: a window is forced open at 3 a.m. in a house in Palmarejo, or a motion sensor picks up movement in a warehouse in Achada Grande after closing time. What happens next depends on one decision made at installation: whether the alarm is connected to a monitoring centre or not. That single difference — between a system that only makes noise and one that triggers an actual response — is what separates a monitored alarm from a standalone one, and it’s what this article is about.
In Cape Verde, with holiday homes left empty for months, businesses spread across several islands, and families whose owners live abroad, knowing exactly what your alarm does when it triggers isn’t a technical footnote — it’s the difference between a problem being handled in minutes or only discovered the next day.
What a monitored alarm is
A monitored alarm is an intrusion system (motion sensors, door/window contacts, glass-break detectors, and similar devices) permanently connected to a central monitoring station, staffed 24 hours a day by trained operators who assess every signal. When a sensor triggers, the alarm panel sends the signal to the station over phone line, internet or mobile network — usually with more than one communication path, so a failure in one doesn’t leave the property unprotected.
At RADAR, the monitoring centre runs on Manitou software, used by more than 600 monitoring stations in the United States protecting over 10 million clients. The Sur-Gard receivers accept any alarm panel using the standard Contact ID or SIA protocols — meaning an alarm already installed by someone else can, in most cases, be connected to RADAR’s monitoring centre without replacing the equipment.
What happens when a monitored alarm triggers
The sequence is the same regardless of island or time of day:
- Detection: a sensor activates (door, motion, broken glass, or a smoke sensor wired into the panel).
- Signal transmission: the panel sends the event to the monitoring centre within seconds.
- Verification: an operator reviews the type of event — if cameras are linked to the system, they can visually confirm what’s happening before acting.
- Contact: the operator tries to reach the account holder or the emergency contacts on file (a family member, manager, or trusted neighbour) to confirm whether it’s a real event or a false alarm.
- Response: if the situation is confirmed as real, the appropriate authorities are contacted. The whole event is logged, which is useful both for insurance purposes and for fine-tuning the system afterwards.
The key point: someone is always evaluating the alarm, even when nobody is home, at the office, or even in the country. That’s exactly what makes monitoring so relevant for diaspora owners with property in Cape Verde — a topic we cover in more depth in how 24/7 monitoring works.
What happens when an unmonitored alarm triggers
An unmonitored system — sometimes called a standalone or self-monitored system — uses the exact same sensors and panel, but nobody receives the signal on the other end. When it triggers, it typically:
- Sounds the local siren, which may or may not alert neighbours or passers-by.
- In many modern systems, sends a push notification to the owner’s phone — but only if the phone has signal, battery, and the app open or running.
- From that point on, the responsibility to act is entirely the owner’s: decide if it’s real, decide who to call, decide whether to go check it in person.
This can work fine in some situations — a small warehouse where the owner is always nearby, for instance. But it falls short exactly where security matters most: at night, when the phone has no signal, in a holiday home closed up on Sal or Boa Vista, or when the property owner is in Lisbon, Boston or Rotterdam and the only tool available is hoping a notification arrives — and that someone, on the other side of the Atlantic, can actually do something about it in time.
False alarms: why human verification matters
One of the biggest advantages of monitoring is rarely talked about: false alarm filtering. Most intrusion alarm triggers aren’t a real break-in — they’re a door left ajar, a pet, curtains moving in the wind, or simply a code entered in a hurry. In unmonitored systems, every one of these triggers is treated the same way: the siren sounds and the owner has to decide what to do, often without enough information.
At a monitoring centre, an operator can cross-reference information — for example, whether that point has a history of repeated false alarms, whether camera footage is available, or whether the client already mentioned they’d be doing renovation work — before any action is taken. This reduces the fatigue of “alarms nobody takes seriously anymore” and keeps the system credible for when an alarm really is real.
Monitored vs unmonitored: side by side
| Criteria | Monitored alarm | Unmonitored alarm |
|---|---|---|
| Who assesses the trigger | A trained operator at a 24/7 monitoring centre | The property owner |
| Works if the owner is abroad | Yes — the monitoring centre acts regardless of where the owner is | Depends on phone signal, battery and availability |
| False alarm filtering | Done by a trained operator | Immediate decision by the owner, with no added context |
| Event history and logging | Kept by the monitoring centre, useful for insurance | Usually non-existent |
| Cost | Monthly monitoring fee | No monthly fee (equipment only) |
When each option makes sense
There’s no universal answer — it depends on the risk and on how much physical presence the owner can realistically guarantee:
- Monitoring is worth it for properties that sit empty often (holiday homes on Sal, Boa Vista or São Vicente; warehouses; shops after hours), for owners living abroad, or whenever the value of what’s being protected justifies a faster, verified response.
- An unmonitored system can be enough for small spaces with someone consistently nearby and ready to act on any trigger immediately — but even then, monitoring removes the uncertainty of “what if I don’t see the notification in time?”.
One point diaspora owners often miss: only alarm panels (and similar systems with their own battery) keep running through a power outage, thanks to a built-in backup battery. Cameras and video recorders, on the other hand, go down in a power cut unless they’re on a UPS or generator — a real consideration in Cape Verde, and worth planning alongside alarm monitoring, not instead of it.
How RADAR can help
RADAR runs a 24/7 monitoring centre in Praia, with its own team in Santiago and partner technicians on the other islands, able to receive signal from virtually any alarm panel already installed — you don’t need to replace your current equipment to add monitoring. If you’re installing a system from scratch, RADAR is the official distributor of Visonic panels, with wireless kits that install quickly without rewiring; see our article on wireless alarm systems. And if you already have an alarm and just want to check whether it’s actually being monitored properly, we recommend a technical assessment — many systems installed years ago develop faults that only show up exactly when they’re needed most.
Frequently asked questions
Can I connect an alarm I already have installed, from another installer or brand?
In most cases, yes. RADAR’s monitoring centre receivers accept any panel using the standard Contact ID or SIA protocols, which cover the vast majority of alarm systems installed in Cape Verde, regardless of who installed them.
What happens if I don’t answer the monitoring centre’s call?
The centre tries the contacts the client has listed, in order. If none respond and the situation suggests real risk, the agreed protocol is followed, which can include contacting the relevant authorities. That’s why it’s worth keeping your emergency contact list up to date.
Does monitoring detect faults, or only intrusions?
It depends on how the panel is programmed, but typically the monitoring centre can detect low battery, power failure, communication loss and tampering — not just intrusion triggers. This allows problems to be fixed before they become a real security gap.
How much does alarm monitoring cost in Cape Verde?
Monitoring at RADAR starts from 100$00/day, with the standard residential plan at 3,500$00 + VAT/month via automatic bank transfer. The exact cost depends on the type of connection and services included; the most reliable way to know the cost for your case is to request a free technical assessment.
Can a smoke detector be monitored the same way as an intrusion sensor?
Yes — smoke sensors can be wired directly into the same alarm panel, and their triggers are handled by the monitoring centre with the same verification and response logic. It’s an affordable way to add basic fire detection to a home or small business that already has an intrusion alarm.
Does it make sense to have a monitored alarm and cameras at the same time?
Yes, and it’s increasingly common: when the monitoring centre has access to the property’s cameras, the operator can visually confirm what’s happening before deciding on a response, further reducing the risk of acting on a false alarm.
If you have an alarm installed and aren’t sure whether it’s actually monitored — or want to check if your current system is working as it should — contact RADAR and book your free technical assessment, no obligation.