4M Spy Science Руководство пользователя - Страница 2

Просмотреть онлайн или скачать pdf Руководство пользователя для Система безопасности 4M Spy Science. 4M Spy Science 2 страницы. Intruder alarm

E. MAKING THE KICK WIRE
1
Cut a string of 50 cm. Adjust the string to
your desired length. Tie one end of the
string to the trigger plate. Tie the other
C9
end to the trigger plate holder. Tie a few
more knots to secure the connection.
Trigger plate holder
2
Testing the alarm function: Now insert the
trigger plate to the connection plate. This
will separate the two metal plates. Now
check the function by turning on the
switch. There should not be buzz sound
as the connection plate are now being
separated by the plastic trigger plate.
Now pull out the trigger plate with string
connected to it. The buzzer will produce a
sound immediately as the two connection
plates are now in touch and a close
circuit is produced. You may now stop the
buzz by switching it off or by inserting the
trigger plate into the connection plate
again.
F. MOUNTING THE ALARM
REMARKS: YOU WILL NEED ADULT'S PERMISSION AND SUPERVISION DOING THIS.
C8
Double
adhesive tapes
1
Double
2
On the similiar level
adhesive
as the alarm case just
tapes
mounted, use the
double adhesive
tapes provided to
mount the wall mount
to the door surface.
G. SETTING THE ALARM
C7
Trigger plate
C6
2
Insert the trigger plate to the connection plate
of the alarm case.
4
Test the alarm set up by closing the door
then opening it again. When the trigger
plate is being pulled out from the
connection plate,
the alarm will be
triggered and produces a buzzing sound.
If you would like the alarm be triggered
with small opening of the door, make the
string shorter by winding the unwanted
length to the trigger plate holder (C9),
and vice versa.
Hang the door plate
Mount your alarm case to the
provided
door surface. You may use the
those "UNWANTED
double adhesive tapes
INTRUDERS". It's
provided for this purpose.
cool.
The intruder alarm does not only apply to the door, it also applies to your drawer
for security. Do you have any suggestion for intruder alarm application?
C8
C9
1
Snap the trigger plate holder to
the wall mount.
3
Switch on the alarm.
to
warn
H. TROUBLE SHOOTING
If the trigger plate is pulled out and the buzzer does not produce a sound:
1. Check if all connection points are intact and are connected in correct order.
2. Check if the batteries are too old, or are installed in the correct polarities.
3. Check if the switch at the battery case is switched on.
4. Check if the metal connection plates are touching each other when the trigger plate is removed.
If the plates happen to be detached from each other, the circuit is not complete. You may ask an
adult's assistance to bend the upper metal plates downward so that it could touch the lower metal
plate again.
REMARKS: When the alarm is not in use, please switch it off and wind whole length of the
kick wire to the wall mount. It is further recommended that the batteries should also be
removed.
I. FUN FACTS
How does your the intruder alarm work?
After you have finished the installation of the intruder alarm, the connection formed an
open circuit. There are two points at the circuit which control the flow of current to the
buzzer: the switch built on the battery case and the plastic trigger plate inserted between
the connection plates. When alarm is set up and switch is on, the only disconnection point
is the trigger plate. The trigger plate is made of plastic which insulate the electric current
from flowing through. When the door is opened, the trigger plate will be taken away. Thus,
the two metal plates come to contact with each other. The circuit is now a closed circuit.
The buzzer is turned on when the current pass through it.
Some things about electricity...
In the intruder alarm, we only use the battery which produces the one-way direct current
(d.c). That is the current only flows in one direction ( positive to negative ). However, the
electricity supplied from the power station is alternating current (a.c). The current does not
only flow in one direction, it flows backwards and forwards around the circuit at a certain
frequency (positive to negative and negative to positive).
The wire of most electrical appliance normally consists of three insulated wires: the live,
the neutral and the earth wires. The live wire goes positive "+" and negative "-"
alternatively, making the current flow backwards and forwards around the circuit. The
neutral wire provides the return path for the current to flow back to the mains socket. The
earth wire is a safety wire which connects the metal body of the electrical appliance to the
earth for grounding the electricity leakage. Also, most electrical appliances have another
safety device - fuse. It is a thin wire of short length which will overheat and melt in case the
current is higher than the specified value. If a fault develops and a large current flows
through the circuit, the fuse melts and breaks the circuit in order to prevent the cable from
overheating which may cause a fire.
© 2005 4M INDUSTRIAL DEVELOPMENT LIMITED