Burglar Alarm vs CCTV: Which Should You Fit First?
What each system is good at, where each falls short, and how to decide
If you can only fit one system, a burglar alarm is usually the better first step for protecting a building, because it detects an intrusion and raises the alarm while it is happening. CCTV is better at deterring people on the approach, recording evidence and letting you check in remotely. Most properties end up with both, but the order depends on what you are trying to prevent.
The two are often lumped together as security, yet they do quite different jobs. An alarm responds to someone opening a door or moving inside; it does not show who they were. A camera records a face or a number plate; it does not by itself stop someone walking into the house. Understanding that difference makes the choice much easier.
We install both burglar alarms and CCTV across Kent and South East London, so we have no reason to push one over the other. The comparison below is how we explain it to customers deciding where to start.
Five Checks That Settle It
Name the risk you care about most
Break ins while you are out point towards an alarm. Theft from the drive, garden or yard, or disputes about what happened outside, point towards cameras.
Think about when you are away
Long periods away from home or an empty building at night favour an alarm with alerts. Frequent short absences where you want to see what is happening favour CCTV with remote viewing.
Check what insurers ask for
Some policies ask about alarms specifically. Look at your policy wording before deciding, especially for business premises.
Plan for both even if you fit one
If cabling or a recorder location can be planned now, adding the second system later is easier and tidier.
How the Options Compare
What an alarm does well
It detects entry through doors and windows and movement inside, sounds internally and externally, and can send alerts to your phone. The bell box on the wall is itself a deterrent.
What an alarm cannot do
It does not record who triggered it or what they did outside. Without cameras, you often only know that the alarm went off and roughly where.
What CCTV does well
Visible cameras deter many opportunists, recorded footage helps identify people and vehicles, and remote viewing lets you check alerts without going home.
What CCTV cannot do
Cameras do not detect someone inside a room they do not cover, and footage is only useful if cameras are positioned and maintained properly.
Why they work best together
The alarm detects and alerts; cameras show what caused it. That combination means fewer wasted trips and far better evidence if something happens.
Not sure whether to start with an alarm or cameras?
Tell us about the property and what worries you, and we will give you a straight answer.
No call centres, a real engineer answers.
Points Worth Weighing Up
Worth a Conversation Before You Buy
Getting it right first time
Whichever you choose first, a system only works if it is used and maintained. Set the alarm every time you go out, keep camera lenses clean and recorders healthy, and have both checked regularly so neither lets you down when it matters.
Guides People Read Alongside This One
- How Long Does CCTV Installation Take?
- Security System Survey: What to Expect
- Common causes of unexplained alarm activations and what you can check yourself
- Orisec Engineer Code, User Code Change and Lockout Reset
- NVR No Signal on Monitor: What to Check First
- Common reasons for poor image quality on CCTV cameras and what a homeowner can safely check
Things Owners Ask Us Every Week
Burglar Alarm vs CCTV: Which Should You Fit First?: common questions
If the cameras are past saving, a proper survey is the next step.
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