INTRODUCTION
The PA4 Alarm Package contains all components
necessary to install a complete system. The items
included in your Package are shown opposite. The
main components are as follows:-
ALARM CONTROL PANEL
The Control Panel is the heart of the intruder alarm
system and contains the microprocessor and electronic
circuitry necessary to monitor the various detection
circuits (Zones) and to initiate an alarm condition in the
event of an intrusion into a protected area.
The complete system operates at 12 Volts powered
from the plug-in mains adaptor. In the event of a
mains failure, the system will operate from the
optional Back-up Batteries if these have been fitted.
The Control Panel is operated via the push buttons on the
front of the Control Panel allowing the user to ARM/
DISARM the system, Omit Zones, view the Event Log,
Test the system or Program the various system functions.
A four digit User Access Code ensures that only
authorised users can operate the system. The Control
Panel also contains a small speaker used to indicate
various conditions by means of a variety of tones.
The Control Panel incorporates a ‘Non Volatile Memory’,
(NVM) which records all program settings indefinitely
even when all power has been removed.
The Control Panel will also remember which mode it was
in when power was disconnected and revert to this
mode when power is restored, e.g. if the panel was in
Alarm Mode when the power was removed, the panel will
continue to be in Alarm Mode when power is restored.
All detectors and alarm circuits are wired from the
Control Panel and operate at 12 Volts dc.
PASSIVE INFRA RED MOVEMENT
DETECTORS
Passive Infra Red (PIR) detectors are designed to
detect movement in a protected area by detecting
changes in infra red radiation levels within its field of
vision. If movement is detected the PIR detector will
generating an alarm signal at the Control Panel, (if
the system is armed). PIR detectors will also detect
animals, so ensure that pets are not permitted
access to areas fitted with PIR Movement Detectors
when the system is armed.
Additional Passive Infra Red Movement Detectors
can be purchased separately, if required.
MAGNETIC CONTACT DETECTORS
Each Magnetic Contact Detector comprises two parts;
a Magnetic Contact Switch and a Magnet. They are
designed to be fitted to either doors or windows with
the Magnet fixed to the moving/opening part and the
Contact Switch fixed to the door or window frame.
When the protected door or window is closed, the
Contact Switch is held closed by the magnetic field
from the Magnet. Opening the protected door or
window will remove the magnetic field and allow the
contact switch to open generating an alarm signal at
the Control Panel, (if the system is armed).
Additional Magnetic Contacts can be purchased
separately, if required.
EXTERNAL SIREN
The External Siren enclosure houses the Siren, which
when assembled, installed and wired to the Control
Panel will activate in the event of an intrusion with the
system armed. In the event of the cable to the Siren
Unit being deliberately cut an alarm will be generated
at the control panel, provided that the tamper circuit
to the Siren has been connected.
INTRODUCTION & OVERVIEW
2
PA4 Alarm
SYSTEM OPERATION AFTER
POWER FAILURE
If a power failure occurs while the system is
armed and backup batteries are not fitted (or flat)
then when power is restored the system will be in
its previously armed state. If there are any PIR
detectors wired to any active zone then an alarm
will initially occur. The siren will sound for the set
alarm duration after the 3-4 minutes required for
the PIR detectors to stabilise.
This is because the PIR detectors require a period
of 3-4 minutes to stabilise before they operate
correctly and during this period they effectively
generate an alarm signal to the Control Panel.
Note: Although optional, it is strongly recommended
that backup batteries are fitted.
