Perimeter security
Perimeter security for private homes
The difference between knowing someone got in and knowing someone is trying to get in. Detection at the fence and in the garden, image verification, and an alert with a photo on your phone — before they reach the door.
The layers, in order
Early detection
Radar for the open volume of the garden, LiDAR for one critical plane, beams or curtains for straight fence runs. It fixes position and time, and starts the recording.
Image verification
An AI camera or thermal unit answers the only question that matters: is it a person? No agreement between the two layers, no alarm — that is what kills false alerts.
Alert, light, siren
A photo alert to the owner, zoned deterrence lighting and a siren within local noise rules. Hard-wired, so it works even with the network down.
Matching technology to terrain
| Terrain | What usually fits |
|---|---|
| Open garden, 500–20,000 m² | Radar + AI camera |
| Glass facade, wine cellar, wall coping | LiDAR as a critical plane |
| Long, unlit sight lines | Bi-spectral thermal |
| Straight fence runs | Beams or curtains + verification |
| Small plot (< 500 m²) | Well-placed AI cameras; radar would be over-specifying |
The full comparison, with specifications and sources: technical page.
The perimeter-security pyramid
Explore the perimeter-security ecosystem
Frequently asked questions
Which is better, a perimeter alarm or cameras?
They do not compete — they combine. The perimeter layer (radar, LiDAR, beams) detects early; the AI camera verifies it is a person. The alert only fires when both agree, which is what kills false alarms.
What is the difference between perimeter and volumetric detection?
Volumetric watches an interior volume or a zone; perimeter detects at the boundary of the plot, before the intruder reaches the house. Perimeter buys reaction time, which is what matters most.
Can the perimeter be protected without cables across the garden?
Often yes: there are wireless sensors and links, though power and reliability are studied case by case. What we do not recommend is trading continuity for looks.
How do you protect a very large plot?
With adequately ranged radar for the open volume and thermal on long, unlit sight lines. One radar unit can cover thousands of square metres; the visit measures where the shadows fall.
What about the blind zones behind the house?
Every solid obstacle casts a shadow: it is covered with a second unit or a LiDAR plane against the facade. The radar shadow is measured on site, not guessed.
Does it detect someone climbing over the fence?
Yes: it is a classic case. A wall-coping sensor or a LiDAR plane over the fence warns of the climb attempt, and the camera verifies.
Does it alert when a car comes up the driveway?
Yes: vehicle detection on the drive gives early warning, especially useful on fincas with a long access.
Does it work at night and in bad weather?
Radar does not depend on light and is unaffected by rain, shadows or headlights; thermal sees in total darkness. The AI camera relies on adequate lighting or the thermal channel.
Can only one side of the plot be protected?
Yes: it is designed by zones. It is common to reinforce the boundary towards the street or the mountain and keep the rest on a lighter layer.
Will the siren disturb the neighbours?
It is set to the municipal ordinance (in Málaga city, 60 seconds and 85 dBA at 3 m). Deterrence is reinforced with zoned lighting, which has no such limits.
What technology does my plot need?
It depends on the terrain: surface, subdivision, sight lines, lighting and distance to the sea. The selector on the technical page gives a steer, and the visit confirms it.
Can I integrate security with my existing home automation?
In many cases yes, via standard interfaces (KNX, Modbus, MQTT, relay). Anything that ties the project to one brand is decided consciously, not by inertia.
Does perimeter detection comply with Spanish law?
We install systems not connected to a receiving centre, outside the activities requiring authorisation under Law 5/2014. Video surveillance is configured under the LOPDGDD.
How much does a perimeter security system cost?
It depends on the surface and the number of layers. We do not quote by phone: the radar shadow and real sight lines are only measured on site, and that is where the price is set.
Does the installation need maintenance?
It is advisable, especially on the coast: salt air and heat work against the equipment. Maintenance is optional and with no lock-in.
What exactly is perimeter security?
Detecting the intruder on the grounds, before they reach the house: at the fence, in the garden, on the driveway. A detection layer (radar, LiDAR, beams) is paired with image verification, and an alert is raised only when both agree.
Is it worth it on a large plot?
That is where it earns its keep. A security radar covers thousands of square metres with one unit; thermal cameras extend coverage along long, dark sight lines. On small plots we will talk you out of it — the money does more in camera quality.
My garden has walls, hedges and terraces. Does radar still work?
Every solid obstacle casts a blind zone behind it — that is physics, not a product defect. Subdivided gardens need either combined technologies or a stronger camera layer; we measure the radar shadow on site rather than guessing it.
How many false alarms should I expect?
The target of proper commissioning is that your dog, your garden and the wind stop raising alerts. That is achieved with AI classification, the radar's vegetation filters and the LiDAR's per-zone size thresholds — plus the post-installation fine-tuning almost nobody bothers to do.
Can the siren run as long as it likes?
No. Málaga city, for instance, limits outdoor sirens by ordinance (60 seconds, 85 dBA at 3 m); each municipality's rules are respected. Deterrence is reinforced with zoned lighting, which has no such limits.
Access points
The weak point isn't the fence — it's the gate
In most homes the intruder does not climb the highest wall; they come in where there is already a gap made for coming in: the vehicle gate, the service door, the gardener's or the pool access. These are the points legitimate people use every day, and precisely for that reason the worst-watched.
In your area we treat those accesses as zones in their own right: detection that tells the expected passage from the one that is not, image verification of who arrives, and a record of every opening. The point is not to turn your home into a bunker, but to know who comes in when you are away, and to make sure an open service door is not an invisible hole.
Where there is domestic staff, maintenance or frequent deliveries, this is the layer that turns a normal flow of people into something traceable, with no friction for you.
The alert
What happens, exactly, when the alert fires
A good system is not judged by what it does at rest, but by what happens in the ten seconds after a real detection. The moment two layers agree there is a person where there should not be, the sequence starts: an alert to your phone with the image of that moment, a recording of the zone, and — if you choose — active deterrence with lighting and siren.
You get a photo, not an anonymous buzz: you see whether it is the courier, the gardener or someone you don't recognise, and act with judgement instead of panic. In your area, where many homes are watched from a distance, that image is the difference between calling for nothing and calling with reason.
And the recording stays: an image obtained correctly, framed within your property, is usable evidence. The system does not just scare the intruder — it documents what happened.
Data protection
Cameras that obey the law, not dodge it
A camera that sees beyond your fence can become a legal problem instead of protection. Spanish data-protection rules (LOPDGDD, art. 22) are clear: a visible information sign, a frame limited to your property and access points, and image retention of one month at most unless required otherwise.
We treat this as part of the project, not as paperwork afterwards. We minimise the field of view to your plot, place the mandatory signage and set retention to the legal limit. In your area, where many plots border the street or a neighbour, framing well from the start avoids the complaints that year after year rank among the most frequent before the data-protection agency.
Recording well is also recording within the law: an image obtained correctly is usable; one obtained by intruding on a neighbour can turn against you.
Deterrence
Deterring beats recording the burglar
The best incident is the one that never happens. An intruder sizing up a house looks for the easy way in, and a plot that visibly detects, lights up and reacts is a plot that gets skipped for the next one. Visible deterrence does more work than any recording after the fact.
In your area we pair early detection with zoned response: when something enters the perimeter, that zone's lighting comes on and, where appropriate, the siren marks presence. It is not theatre: behind it is a real detection that has already classified this as a person, so the reaction does not trip on a cat or disturb the neighbours for nothing.
The goal is not to collect videos of attempts, but for there to be no attempt. A perimeter that reacts in time changes the equation for whoever is watching from outside.
Transparency
What we don't do, said plainly
Technical honesty starts with the limits. We are not an alarm receiving centre (ARC) and provide no guarding, patrol or physical response, and we do not guarantee the intervention of the security forces: the systems we install are not connected to a central station, and the alert, with an image, reaches you directly. No compulsory fee.
Nor do we promise that nothing can ever get in. No system is infallible. What a good perimeter does is detect earlier, verify with an image and give you time and evidence to act — alert, light up, record — while the intruder is still at the fence and not in the living room.
We work only with private homes — villas, chalets and fincas in your area — because it is what we do well. We would rather tell you what a system does not cover before installing it than after.
Shall we talk about your home?
No-obligation technical visit anywhere in the province of Malaga. We work in English and Spanish.