1. Introduction
The Alarm System
The 9752 alarm system comprises a control unit, one or more keypads, and various detectors.
The control unit is a box that houses the main controller, power supply,
The detectors are installed at various places, or zones, around the premises. If something triggers a detector then the detector signals back 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 from the communicator over the telephone line to an Alarm Receiving Centre (ARC). When unset the system does not raise an alarm if a detector is triggered.
The system provides different setting Levels, labelled A, B, C and D. Level A sets the whole system, protecting all of the premises covered by the alarm system. Levels B, C and D set part of the system, protecting part of the premises while the rest is in use. The system raises an alarm when a detec- tor belonging to a set Level is triggered. The Installer allocates zones to Levels B, C and D during installation. Ask your Installer to tell you which zone is allocated to each Level.
Your premises may be fitted with 24 hour zones and panic alarm zones. If these zones are triggered the system will raise an alarm whether or not any Level is set.
The Keypads
Your alarm system is fitted with one or more 9930 liquid crystal display (LCD) keypads. You can set and unset the system from the keypad, read the event log and make minor changes to the way the system operates.
You must enter an access code before the system will accept commands from the keypad. The system can store up to 16 different access codes, providing secure access for 16 users.
Figure 1 on the next page shows the keypad in detail.
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