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Term definition
Detector: A facility that detects intrusion and abnormal state
automatically via some electric or physical methods
and output switch signals or wireless signals to the
system for disposal, then output alarm signals, such
as infrared detector, smoke detector, etc.
Zone: An area of the detection range of one or one group
detectors.
Bypass: Close one of the zones temporarily, so that it can not
alarm while act in the zone.
Arm-away: The armed status while going out. All the zones without
bypass are in armed status.
Arm-stay: The armed status at night. All the zones are in armed
status except active zones.
Disarm: Close the entry/exit zones, active zones, perimeter
zones. Other zones are still in arm status.
No matter armed or disarmed, it is in valid detecting
24-hour zone: status. It is usually used in fire alarm, duress alarm
and other emergent alarm which can be cancelled
only by password holder.
Center stations It is an alarm receiving station, to which the alarm
receiver: controller sends out alarm information via telephone
line when alarm occurs. The station will take
corresponding actions after receiving the alarm.
Entry delay: A period for user to enter detection area, activate the
delay zone and disarm before the system alarms.
During the period, user can activate several specified
zones (entry zone) without alarm immediately. While
exceeding the time, the system alarms if not
disarmed. Zones with entry delay are the exit/entry
zone and active zone.
Exit delay: A period for user to leave detecting area once the system
armed. Zones with exit delay will not alarm during this
period. The zones with exit delay are the exit/entry
zone and the active zone.
User address code: 4 digits code used to be distinguished by the center sta tio ns
when the control panel with network alarms.
Duress password: When user is forced to disarm the control panel by burglar,
user inputs duress password, the control panel is
disarmed but sends alarm information to the center
stations or receiver. The duress password can be used
to disarm but set parameters. The duress password is
the last digit of user password plus 1 without carry
(9+1=0). E.g. while user password is 8889, the
duress password is 8880; while user password is
9999, the duress password is 9990.
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12. Warranty
Although it is an advanced and reliable security system, it does not offer
guaranteed protection against burglary, fire, or other troubles. The
limitations are as follows:
1. Intruders may get access to unprotected openings or have technical
sophistication to invalidate the system.
2. The system will disable without power.
3. Alarm warning devices such as bells may not alert people if they are
installed in an improper position. If the alarm bell is installed outside, there
are less likely to waken or alert people inside the bedrooms.
4. Telephone line used to transmit alarm signals may be out of service for
any reason, or can not perform communication normally for vicious attack.
5. Unsuitable installation position of detectors. If smoke detector is installed
in an improper position, it is not easy for smoke to enter the detecting area.
Because of doors or walls, it is hard for the detector to detector fires in other
rooms, e.g. the detector in the first floor can not sense fires in the second
floor.
6. Lack of maintenance may lead to the system disabled. Weekly testing is
necessary to ensure the system work normally.
13. Troubleshooting
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