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NACOSS GOLD approved for Installation & Maintenance

SJG Electrical & Security Ltd is an NSI (National Security Inspectorate) approved registered installer for the design, Installation, Corrective and Preventative Maintenance of Intruder & Hold Up Alarm Systems.

Choosing an NSI approved company ensures that the contractor you select works to the highest recognised industry standards as demanded by the Police Services and insurance industry. As a UKAS accredited certification body, NSI approves companies providing quality solutions across the security sectors. 

When applying for insurance or in the event of a claim following a burglary, your insurer may ask for proof that an alarm has been installed in line with their requirements. If your alarm is installed by a NSI approved company, you will be issued with a Certificate of Compliance which should be presented to the insurer as required.

You may be entitled to receive a discount if your intruder alarm meets your insurer’s requirements, check with your insurance company before you apply for or renew a policy to avoid losing out. If you are using an insurance broker to arrange your insurance, make sure they check this for you.


NACOSS GOLD accredited
demonstrating compliance with:

BS EN ISO 9001:2015 – Quality Management Systems

NSI Quality Schedule

NSI NACOSS Gold Approval Criteria

BS 7858:2019 – Screening of Individuals

PD 6662 – Intruder and Hold-up Alarm Systems

Our Alarms

Protecting hundreds of homes across the Lincolnshire & Cambridgeshire region with Intruder alarms installed, monitored and maintained by SJG Electrical & Security, we guarantee to work to the highest industry standards.

As a National Security Inspectorate our security systems meet all requirements demanded by the Emergency Services and the Insurance Industry.

Bells Only Alarm

A bells-only alarm is an alarm which makes a noise when a break-in is detected. The external alarm will only continue for a maximum of up-to 20 minutes. But the internal alarm and outdoor light will continue to flash until the system is turned off. Unmonitored systems are typically used at lower-risk homes, those without a significant amount of contents or valuables.

Smart Alarm

Access and control your home from anywhere in the world through your smart device via the HKC SecureComm Cloud. Enjoy the security benefits of the multi-award winning Hybrid alarm system, with on board 2 way wireless receiver.

Monitored Alarm

Peace of mind comes not only from having a fully integrated home security system, but also from having highly trained staff monitoring your security twenty four hours a day. Most insurance companies insist that alarm systems are monitored to provide emergency response in the event of an incident. Our 24 hour alarm response centre is connected directly to all UK emergency service. We will make sure that the Police, Fire Brigade or your Keyholder is called out to your home whenever they’re needed.

• Wired Systems • Wireless Systems • Hybrid Systems • Audible Systems • Remote Signalling Systems • Monitored Systems • Alarm Takeovers • Panel Upgrades • Remote Phone App Control • Grade 2 & 3 Installations • Servicing • Repairs • 24 hour Call Out