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1. Introduction

Alarm System

The alarm system described in this book comprises a control unit (model

9651), one or more keypads, and various detectors. The control unit houses a

main controller, power supply, stand-by battery and an optional

communication device. It is normally fitted in a safe place out of sight (for

example, under the stairs).

The detectors are installed in various places, or zones, around the premises.

If something triggers a detector, the detector signals this to the control unit.

How the control unit reacts depends on whether the system is set or unset.

• When set, the control unit raises an alarm whenever a detector is

triggered. The alarm might be a bell or strobe on the outside of your

premises, or it might be a silent signal over the telephone line to an Alarm

Receiving Centre (ARC).

• When unset, the system does not raise an alarm if a detector is triggered.

• Your installer can program the control unit so that you can set the system

to one of four levels: A, B, C or D. Level A protects the whole of the

premises covered by the detectors. Levels B, C and D each protect part

of the premises while the rest is in use. You cannot set more than one

level at the same time.

The control unit raises an alarm when a detector in a set level is triggered.

Your installer allocates detector zones to levels during installation. Refer to

the table on page 28 to see how zones are allocated.

Your premises may be fitted with 24-hour zones and panic alarm zones. If

these zones are triggered, the system will raise an alarm even if no level is

set. 24-hour zones are often used to protect (for example) emergency fire

exits.

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Cooper Security 9651 Guida Utente Pagina 3