EAC Fire & Security recently completed an intruder alarm takeover and repair in Barton on Sea, New Milton, restoring an existing Scantronic 9452 burglar alarm system to full working order.
During our initial inspection, we discovered several alarm circuits had been linked out, including the detection tamper circuits, external bell tamper and zone 1. Our engineers carried out the necessary repairs, replaced faulty components and completed a routine service to leave the system healthy and functioning correctly.
Why Was the Intruder Alarm Takeover Needed?
The property had an existing Scantronic 9452 intruder alarm that required a thorough inspection and servicing.
On arrival, we discovered that several important circuits had been bypassed:
- Detection tamper circuits linked out
- External bell tamper linked out
- Zone 1 detection circuit linked out
Tamper circuits are an important part of an intruder alarm system. They are designed to detect interference with alarm equipment, such as someone opening a detector or tampering with an external bell box.
When circuits are linked out, the system may appear operational while certain security functions are no longer working correctly.
Rather than recommending an entirely new system, we investigated the existing installation to identify which components could be retained and which required replacement.
Works Completed – Scantronic Alarm Repairs
Restoring the Detection and Tamper Circuits
We began by inspecting the existing wiring and reconnecting the previously bypassed circuits.
All detection tamper circuits, the external bell tamper and zone 1 were wired back into the alarm system.
This restored the relevant protection circuits and allowed the system to identify faults and tamper conditions correctly.
External Alarm Bell Replacement
The existing external bell box was replaced with a new unit, positioned high on the front of the property.
An external alarm sounder provides an audible warning when the intruder alarm is triggered and acts as a visible deterrent.
The replacement formed an important part of restoring the property’s existing security system.
Hallway Motion Sensor and Back Door Contact
As part of the takeover, we also replaced two existing detection devices:
- Hallway motion sensor: Replaced to provide reliable movement detection within the property.
- Back door contact: Replaced to ensure the alarm correctly detects when the rear door is opened.
Both devices are important parts of the property’s intruder detection system, helping protect vulnerable entry points and internal areas.
Failed Backup Battery Replacement
During testing, the existing 2.1Ah backup battery failed its capacity test.
We replaced it with a new 2.1Ah battery to restore backup power functionality.
Alarm backup batteries are designed to keep systems operational during a mains power failure. Over time, batteries deteriorate and may no longer provide the required capacity.
This is one of the reasons regular intruder alarm maintenance and servicing is important.
Final Inspection and Outcome
Once the repairs and replacements were completed, we carried out a routine intruder alarm service.
The system was inspected and tested following the remedial work, confirming that the previously identified faults had been resolved.
The Scantronic 9452 alarm was left healthy and functioning correctly, without the customer needing to replace their entire intruder alarm installation.
This project demonstrates how a professional alarm takeover can restore an older security system through targeted repairs and replacement components.
Intruder Alarm Takeovers in Barton on Sea and Hampshire
If you have moved into a property with an existing burglar alarm, inherited a system from a previous installer or have an alarm that has not been serviced for some time, EAC Fire & Security can help.
We provide intruder alarm takeovers, fault finding, servicing and repairs across Barton on Sea, New Milton, Lymington, Christchurch, Bournemouth, Poole and surrounding areas of Hampshire and Dorset.
Our engineers work with a range of existing alarm systems, including Scantronic, Texecom, Orisec and Pyronix.
Whether your alarm has a faulty detector, failed backup battery, wiring fault or an external bell issue, we can inspect the system and recommend the appropriate repairs.
Need an existing intruder alarm repaired or taken over? Contact EAC Fire & Security to arrange an inspection or discuss your security requirements.
