Help Centre / Alarm Help
Can You Service an Alarm You Did Not Install?
In many cases, yes. Sanders Secure can often service, repair or take over burglar alarm systems installed by another company, provided the system can be accessed, tested and supported safely.
Short answer
Yes, in many cases we can service an alarm even if we did not install it. We regularly help customers who have moved into a property with an existing alarm, lost contact with the original installer, or want a more local company to maintain their system.
The first visit is normally used to understand the condition of the alarm, check whether it can be accessed properly, test the main parts of the system and advise whether servicing, repair or replacement is the most sensible route.
If you already have an alarm system and want it checked, Sanders Secure can help with alarm servicing, maintenance and takeovers across Plymouth, South Devon and Cornwall.
When we can usually help
There are plenty of situations where taking over or servicing an existing alarm is practical. The important thing is that the system can be accessed, tested and left in a safe and reliable condition.
You have moved into a property
If the house or business already has an alarm, we can usually inspect the system, check whether it still works correctly and advise whether it is worth keeping, servicing or upgrading.
The original installer is no longer available
Some customers lose contact with the original installer, inherit an older alarm, or find that the company who fitted it no longer services their area.
You want a local maintenance company
If you want a local company to look after your system, we can check the alarm and explain what would be involved in maintaining it going forwards.
The alarm is showing a fault
If the system is beeping, showing tamper, showing battery fault or refusing to set, we may be able to fault find and repair it, even if it was installed by someone else.
The alarm has not been serviced recently
A service visit can check the condition of the system, backup battery, detectors, sounders and user operation, then highlight any issues that need attention.
You are considering an upgrade
Sometimes the existing alarm is worth keeping. Other times, an upgrade is more sensible. We will explain the practical options clearly.
What we check on a takeover or first service visit
A takeover visit is about understanding what is already installed and whether it can be sensibly maintained. We do not want to promise that every system can be repaired or supported until we have seen it.
- The make and model of the control panel where identifiable.
- The condition of the keypad, panel and visible equipment.
- Whether user access is available.
- Whether engineer access is available or reasonably obtainable.
- The condition of the backup battery and charging where appropriate.
- Whether the system sets and unsets correctly.
- Whether the detectors and contacts respond correctly.
- Whether any zones are in fault or have been bypassed.
- Whether there are tamper, battery or mains warnings.
- Whether the external sounder can be tested where appropriate.
- Whether the system is obsolete or difficult to support.
- Whether repair, servicing or replacement is the better route.
Important: We will not simply take over a system blindly. If the alarm has faults, missing information, obsolete parts or safety concerns, we will explain that clearly before recommending the next step.
When it may not be practical to take over an alarm
Most existing alarms can at least be inspected, but there are some situations where full takeover, repair or ongoing maintenance may not be practical.
- The system is locked and cannot be accessed properly.
- The panel is obsolete and replacement parts are not realistically available.
- The system has been badly altered or partly disconnected.
- The wiring or devices are in poor condition.
- The alarm has repeated faults that cannot be repaired reliably.
- The system does not meet the customer’s current needs.
- There are safety concerns with the installation.
- A repair would cost too much compared with a sensible upgrade.
If that happens, we will explain why. Sometimes the honest answer is that a replacement or upgrade will be more reliable than spending money on an alarm that is already at the end of its useful life.
What helps before a takeover visit
You do not need to know everything about the alarm before contacting us. However, the following information can help us understand the system more quickly.
- A photo of the keypad.
- A photo of the main control panel if it is visible and accessible without opening it.
- Any user manual, paperwork or old service records.
- The user code, if you know it.
- Any app login information, if the system uses an app.
- Any fault messages currently showing.
- Whether the alarm sets and unsets correctly.
- Whether the external sounder works.
- Whether any zones are bypassed or not used.
- When the system was last serviced, if known.
Tip: Do not open the alarm panel or remove detector covers to look for model numbers. A photo of the keypad is usually the safest starting point.
Will the alarm need replacing?
Not always. Many existing alarms can be serviced, repaired or maintained, especially if the equipment is in good condition and the system is still suitable for the property.
Replacement may be worth considering if the alarm is obsolete, unreliable, unsupported, damaged, missing important features, or no longer suits how you use the property.
Where possible, we will be clear about the difference between a system that needs a simple service, a system that needs repair, and a system where an upgrade would be the better long-term option.
How Sanders Secure can help
We can inspect and support many existing alarm systems across Plymouth, South Devon and Cornwall. The aim is to give you clear advice, not to force a replacement where a practical repair or service is enough.
Takeover checks
We check what is installed, whether it can be accessed, and whether the system is suitable for ongoing support.
Servicing and repairs
Where practical, we can service the system, test devices, check batteries and investigate faults.
Upgrade advice
If the alarm is no longer reliable or suitable, we can explain modern wired, wireless and hybrid options.
For existing systems, the best starting point is usually our alarm servicing and takeover service. If the system is faulty or will not set, our alarm repairs and fault finding page may also be useful.
Related help and services
If you have an existing alarm system, these pages may also be useful.
Alarm servicing and maintenance
For alarm servicing, takeovers, battery checks and system maintenance.
Alarm repairs and callouts
For alarms showing faults, beeping, tamper warnings or refusing to set.
Burglar and intruder alarm systems
For new alarm systems, upgrades, wired, wireless and app-controlled options.
Why won’t my alarm set?
Useful if your existing alarm refuses to arm or keeps showing a fault.
Frequently asked questions
These are some of the common questions we are asked about servicing or taking over an existing burglar alarm.
Need an existing alarm serviced or checked?
If you have inherited an alarm system, lost contact with the original installer, or want a local company to look after it, contact Sanders Secure for practical advice.
