Monitored Intruder Alarms

Protecting your business 24 hours a day.

The risk of loss through burglary or criminal damage has steadily increased over the years to an extent where today monitored intruder alarms are a necessary part of life; they protect property, possessions and people. Whilst most customers acknowledge that a cheap system is false economy – they do want value for money.

Free Site Survey
Detailed Written Quotation
NSI NACOSS Gold Approval
Comprehensive Maintenance Program
One Simple Monthly Payment
24hr Monitoring

Upgrade Your System
Detailed Written Quotation
NSI NACOSS Gold Approval
Comprehensive Maintenance Program
One Simple Monthly Payment
24hr Monitoring

CALL NOW: 0844 826 6633

Why have a monitored intruder alarm?

Intruder alarm systems can be vastly different but are generally categorised into two types:

BELLS ONLY – This type of system when set off activates an audible exterior sounder (bell) in an attempt to draw attention from a passer by or neighbour and thus deterring a thief. With the prevelance of cheap diy kits that are prone to repeat false alarms audible warnings are largely ignored when activated. JB EYE hold no faith in these systems and ask yourself honestly when was the last time you heard an alarm and investigated? Or was it just an annoyance?
MONITORED SYSTEM – When activated these systems communicate to our Alarm Receiving Centre (ARC). The ARC will determine the type of signals received and action these appropriately. Confirmed intruder alarm signals will result in a call to your local Police. Unconfirmed alarms and other non-critical signals will be notified to your nominated key holder.

JB-EYE only install monitored alarm systems, if burglars see a JB-EYE bell box they know the system is a monitored intruder alarm and are likely to pass on to their next target.

All JB-EYE monitored intruder alarm systems provide additional signalling information showing which device within your premises has been activated, power loss, communication problems, personal attack alarms or tamper issues should the system be interfered with, allowing your key holder to make an informed decision as to the most appropriate response.

JB-EYE Security By Design

Design Criteria: Intruder systems should not be encumbering yet allow a high degree of protection. A survey of the premises includes a risk analysis of your property to determine a suitable level of protection.

JB-EYE have standardised all the equipment we install which has virtually eliminated the associated requirement for constant engineer and staff re-training, we pick the right product first time so we are in a position to fully support you.

Our monitored intruder alarm systems provided each user with a unique identity; this allows you to identify who and exactly what each person is permitted to do and when and where they have authority. This principle is of particular use to those with multiple premises.

Security Grading

Security Grades are defined in the standards document BS EN 50131-1 as follows:

  • Grade 1 – Low risk: Intruders are expected to have little knowledge of the alarm system and may be restricted to a limited range of easily available tools.
  • Grade 2 – Low to medium risk: Intruders are expected to have a little more knowledge of the alarm system and use a general range of tools and some specialist equipment.
  • Grade 3 – Medium to high risk: Intruders are expected to be conversant with the alarm system and have a comprehensive range of tools and portable electronic equipment.
  • Grade 4 – High risk: To be used when security takes precedence over all other factors. Intruders are expected to have the resources to plan an intrusion in detail and have a full range of equipment, including the means to substitute vital components in the alarm system.

The security grade and signalling type of your alarm system will usually be determined by a number of factors: the requirements of your insurance company, the type and location of your premises, personal preference and the value and portability of items you are protecting. Most commercial premises will require a Grade 2 or 3 system. All components of the intruder alarm system must be at least of the required grade for the system to comply with regulations. All JB-EYE monitored intruder alarm systems are installed to Grade 2 as a minimum with many components being Grade 3 as standard allowing for minimal additional work should a system require upgrading from Grade 2 to Grade 3.

Signal Grading

Signalling (Notification) Grades:

Grade 2: Single Path Signalling – Alarm signals will be transmitted to our Alarm Receiving Centre using one means of communication (one path). This path can be IP (using an internet connection), PSTN (using a telephone line) or GPRS (using a mobile sim card). Often this provides the cheapest option but should the path be unavailable for any reason no further signals are able to be transmitted.
Grade 3: Dual Path Signalling – Alarm signals will be transmitted to our Alarm Receiving Centre on one path as above. However, if this path fails or is compromised a second path will continue to transmit signals. The paths would be usually be a combination such as IP & GPRS or PSTN & GPRS but others are also possible.


All JB-EYE monitored intruder alarm system contracts include two NSI approved routine service visits per annum. Our advanced technology allows the interim service visit to be automatically completed remotely. Our customers no longer have to wait for an engineer to attend site for a diagnosis of alarm related problems. Our engineers can check your system remotely and usually solve any problems in a fraction of the time and at a fraction of the cost when called upon.