Most people think about security as a list of products — a camera here, a sensor there, maybe a smart lock on the front door. After doing this work for more than 15 years, I can tell you that approach leaves predictable gaps that experienced burglars know exactly how to find. What works is thinking about security as a sequence of obstacles, each one designed to slow or stop an intruder before they reach the inside of your home.
Here’s how we approach it at Mr Secured — and why homes with layered security have a significantly better outcome when something does go wrong.
The Boundary: Make Your Property Look Like the Wrong Target
The first layer of security happens before anyone approaches your front door. Opportunistic burglars — which is most of them — do a quick mental calculation when they assess a property: how visible is it, how long would entry take, and how likely is it that someone will notice? Anything that makes that calculation less favourable moves them on to an easier target.
Visible cameras at entry points are part of this. So is good lighting — a well-lit property is significantly less attractive than one with dark corners and unlit pathways. Ajax outdoor motion detectors with built-in sirens add another layer: even if a burglar doesn’t care about cameras, an audible alarm at the boundary changes the risk calculation immediately.
The goal at this layer isn’t detection for its own sake — it’s deterrence. You want someone assessing your property to decide it isn’t worth the effort before they’ve committed to anything.
The Perimeter: Slow Down Anyone Who Proceeds
If someone makes it past the boundary deterrents — and some will — the second layer is about slowing them down and creating more detection opportunities. Physical barriers like solid fencing, locked side gates, and sensor lighting at rear access points all contribute here. This layer is often underestimated because it doesn’t involve any technology, but a locked rear gate that takes 30 seconds to get past is 30 additional seconds of exposure and noise.
Camera placement matters a lot at this layer. A camera positioned to cover your driveway from the front is useful, but a camera covering your side gate and rear fence line is where the real perimeter monitoring happens. Most break-ins on Brisbane residential properties occur through rear or side access points — not the front door. We design camera layouts around this reality, not around what looks tidy from the street.
The Interior: Respond Fast If They Get Inside
The third layer assumes that someone has made it inside and focuses on two things: rapid detection and rapid response. Interior PIR motion sensors, door and window sensors, and glass break detectors all feed into this layer. When connected to a monitored alarm system, an intrusion inside your home triggers a response within minutes rather than whenever a neighbour happens to notice something wrong.
This is where Ajax systems have a genuine advantage over older wired alarm panels. Ajax uses encrypted two-way communication between every device and the hub, so cutting the phone line or jamming a single frequency won’t silence the system. Each device reports its own tamper status, so the panel knows immediately if anyone tries to remove or cover a sensor. The hub has its own SIM card backup, so even if someone cuts your internet connection the alarm still communicates.
Interior cameras at this layer also serve an evidence function — footage from inside a home during a break-in is often the most useful for police identification and prosecution, more so than exterior footage where faces may be partially covered.
How These Layers Work Together
The value of a layered approach isn’t just that each layer provides independent protection — it’s that each layer informs the others. If your Ajax boundary sensors trigger, your interior lights can activate automatically. If your cameras detect motion at the rear gate, a notification goes to your phone before anyone reaches the door. If your interior alarm activates, your NVR is already recording everything.
A house with only cameras has footage of what happened. A house with layered security has a much higher chance of preventing it from happening at all — and if it does, a much faster police response.
Getting the Design Right for Your Property
Every property is different. A Queenslander on a 600sqm block in Paddington has completely different security requirements to a commercial warehouse in Rocklea. We offer free on-site assessments across Brisbane, the Gold Coast, and the Sunshine Coast where Jarrod will walk your property, identify the gaps in your current setup, and map out what a properly layered system would look like.
Call 0490 130 339 to book your assessment, or use the contact form on this site. There’s no obligation and no sales pressure — just an honest look at where your property currently stands.