Crism Knowledge Centre

Grading of Intruder Alarm Systems Explained

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People ask me what does a Graded Intruder Alarm mean? Do I need a graded one? Do I need to check my present alarm? How do I know if it is graded if I have no paperwork and I have inherited the system? So, I hope I can clarify some of your queries…

Insurance companies normally require intruder alarm systems to be graded (often specifying what grade the system should be installed to) This is so they know that the design of the system will meet the risks of an intruder breaking into your building.

A risk assessment is always done by an accredited installer to assess what grade the intruder alarm system should be installed to

Intruder alarm systems are graded from Grade 1 to Grade 4:

 

Grade 1is to protect the premises against an intruder who has very basic knowledge and very basic tools.
Grade 2is to protect the premises against an intruder who has knowledge of intruder alarm systems and some more advanced tools that they may use to get around the system.
Grade 3is designed to protect the premises from an intruder who has full knowledge of installing intruder alarm systems and has, at their disposal, the full set of tools they would need to overcome the system.
Grade 4is for the highest risk premises, typically museums, jewellers, financial institutions, banks. These systems usually have a direct link to the local police force.

 

All graded installations are certificated to ensure they comply with the EN and BS standards.

Ungraded installations are not designed to meet any risks to your premises and would probably be installed without consideration or the knowledge required for adequate protection. An intruder novice can get round this system easily.

If you have an Intruder Alarm and have no idea if it is a graded system ask an accredited Security Installer to assess it for you (SSAIB, NACOS).

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  • Good service and fairly priced, plus what he does works! Chris has given us expert advice on security systems and installed and maintained those systems over a number of premises.

    Rick Flay, Property and Business Investor

  • We chose Crism for our security camera because we know and trust the owner Chris Mortimer. On the day of installation the team arrived on time, consulted us where the camera and the hard drive were to be situated and then got stuck in. There was a bit of drilling to insert cables but any dust was cleaned up. The camera is not obtrusive and gives a good picture.

    We are delighted with the end result and would be very happy to recommend Crism to others who are considering making their home more secure.

    Nick & Anne Sievewright, Commercial Photographers

  • As we are expanding our business we have built a large new fitting bay to the rear of our existing property. We therefore needed a new security alarm system for this area.

    Chris at CRISM was recommended to us by our insurance agent (the best recommendation you can get really!) Chris at CRISM and his guys were fantastic, great at answering our questions and fitting our new system.

    We certainly feel safe and secure knowing that our building is protected by a first class security system. We would recommend CRISM every time.

    AP Tyres, Tyres & Wheels Rotherham

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    Testimonials

    • Good service and fairly priced, plus what he does works! Chris has given us expert advice on security systems and installed and maintained those systems over a number of premises.

      Rick Flay, Property and Business Investor

    • We chose Crism for our security camera because we know and trust the owner Chris Mortimer. On the day of installation the team arrived on time, consulted us where the camera and the hard drive were to be situated and then got stuck in. There was a bit of drilling to insert cables but any dust was cleaned up. The camera is not obtrusive and gives a good picture.

      We are delighted with the end result and would be very happy to recommend Crism to others who are considering making their home more secure.

      Nick & Anne Sievewright, Commercial Photographers

    • As we are expanding our business we have built a large new fitting bay to the rear of our existing property. We therefore needed a new security alarm system for this area.

      Chris at CRISM was recommended to us by our insurance agent (the best recommendation you can get really!) Chris at CRISM and his guys were fantastic, great at answering our questions and fitting our new system.

      We certainly feel safe and secure knowing that our building is protected by a first class security system. We would recommend CRISM every time.

      AP Tyres, Tyres & Wheels Rotherham

      Get in touch with us today for a quote on domestic security

      Request a Quote

      Testimonials

      • Good service and fairly priced, plus what he does works! Chris has given us expert advice on security systems and installed and maintained those systems over a number of premises.

        Rick Flay, Property and Business Investor

      • We chose Crism for our security camera because we know and trust the owner Chris Mortimer. On the day of installation the team arrived on time, consulted us where the camera and the hard drive were to be situated and then got stuck in. There was a bit of drilling to insert cables but any dust was cleaned up. The camera is not obtrusive and gives a good picture.

        We are delighted with the end result and would be very happy to recommend Crism to others who are considering making their home more secure.

        Nick & Anne Sievewright, Commercial Photographers

      • As we are expanding our business we have built a large new fitting bay to the rear of our existing property. We therefore needed a new security alarm system for this area.

        Chris at CRISM was recommended to us by our insurance agent (the best recommendation you can get really!) Chris at CRISM and his guys were fantastic, great at answering our questions and fitting our new system.

        We certainly feel safe and secure knowing that our building is protected by a first class security system. We would recommend CRISM every time.

        AP Tyres, Tyres & Wheels Rotherham

        Request a callback for a quote on your commercial security

        Request a Callback

        Testimonials

        • Good service and fairly priced, plus what he does works! Chris has given us expert advice on security systems and installed and maintained those systems over a number of premises.

          Rick Flay, Property and Business Investor

        • We chose Crism for our security camera because we know and trust the owner Chris Mortimer. On the day of installation the team arrived on time, consulted us where the camera and the hard drive were to be situated and then got stuck in. There was a bit of drilling to insert cables but any dust was cleaned up. The camera is not obtrusive and gives a good picture.

          We are delighted with the end result and would be very happy to recommend Crism to others who are considering making their home more secure.

          Nick & Anne Sievewright, Commercial Photographers

        • As we are expanding our business we have built a large new fitting bay to the rear of our existing property. We therefore needed a new security alarm system for this area.

          Chris at CRISM was recommended to us by our insurance agent (the best recommendation you can get really!) Chris at CRISM and his guys were fantastic, great at answering our questions and fitting our new system.

          We certainly feel safe and secure knowing that our building is protected by a first class security system. We would recommend CRISM every time.

          AP Tyres, Tyres & Wheels Rotherham

          Get in touch with us today for a quote on commercial security

          Request a Quote
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