MAGNETIC
INTRUDER
ALARM
QUESTION AND COMMENTS
We treasure you as a customer and your satisfaction with this product is important to us. In case you have any comments or questions,
or you find any parts of this kit missing or defective, please do not hesitate to contact our distributor in your country, whose address is
printed on the package. You are also welcome to contact our marketing support team at Email: [email protected], Fax (852)
25911566, Tel (852) 28936241, Web site: WWW.4M-IND.COM
A. SAFETY MESSAGES
1. Adult supervision and assistance are required at all times.
2. This kit is intended for children 5 years or older.
3. This kit and its finished product contain small parts which may cause choking if misused. Keep away from children under 3 years old.
4. To prevent possible short circuits, never touch the contacts inside the battery case with any metal.
5. Only install batteries after the kit is assembled. Adult supervision is required.
6. Please read through all the instructions and keep them since they contain important information.
B. USE OF BATTERIES:
1. Requires two 1.5V AAA batteries (not included).
2. For best results, always use fresh batteries.
3. Make sure you insert the batteries with the correct polarities.
4. Remove the batteries from the kit when not in use.
5. Replace exhausted batteries straight away to avoid possible damage to the kit.
6. Rechargeable batteries must be removed from the kit before recharging.
7. Rechargeable batteries must be recharged under adult supervision.
8. Make sure that the supply terminals in the battery case are not short circuited.
9. Do not attempt to recharge non-rechargeable batteries.
10. Do not mix old and new batteries.
11. Do not mix alkaline, standard (carbon-zinc), or rechargeable batteries.
C. CONTENTS
41-03440/QR 201124
WARNING:
CHOKING HAZARD - Small parts.
Not for children under 3 years.
TO PARENTS: PLEASE READ THROUGH THESE
INSTRUCTIONS BEFORE PROVIDING GUIDANCE
TO YOUR CHILDREN.
PLEASE SCAN THE QR CODE TO VIEW MULTI-LANGUAGE INSTRUCTIONS
Part A: Base x 1, Part B: Cover x 1, Part C: Magnet x 1, Part D: Magnet holder x 1, Part E: Eyelet plate set x 1, Part F: Battery cover x 1,
Part G: Adhesive tape, Part H: Metal disc x 1, Part I, Terminal caps x 3, Part J: Screws x 3, Part K: Washer screws x 2.
Also required but not included in the kit: 2 x 1.5-volt AAA batteries, a small crosshead screwdriver.
©2020 4M INDUSTRIAL DEVELOPMENT LIMITED. ALL RIGHTS RESERVED.
10. Your Magnetic Intruder Alarm is ready for action! Turn on the alarm and close the door. Now if anyone opens the door even a tiny bit
the alarm will be triggered. Close the door again or switch off the alarm to silence the buzzer.
11. If your door handle is at the right-hand side of the door, stick the system onto the door upside down – it will still work.
F. TROUBLESHOOTING
If the alarm fails to sound in the tests in steps 5 or 6 above:
• Make sure you are using fresh batteries.
• Make sure your batteries are inserted in the holder with the correct polarities.
• Make sure the bare metal of the wires is in contact with the metal of the terminals.
• If the alarm fails to sound when the door is opened, repeat step 9 until it works.
G. HOW IT WORKS
The
disc is made of steel, a magnetic metal which is attracted by the magnet.
When
the door is closed and the triangles on the magnetic
holder and base are aligned, the disc is pulled to one side of the eyelet area by the magnet.
When
the door is opened, the magnet
moves
away from the base and the pull from the magnet is no longer strong enough to hold the disc.
The
disc rolls down into the bottom
of the eyelet area and rests across the two terminals.
This
acts as a switch, completing the circuit and allowing current to flow through
the buzzer.
H. Fun facts
• Many real house alarms use magnetic sensors like this to detect when doors or windows are opened and closed.
A
signal from the
switch goes to the alarm’s control box.
• Magnetic switches are used in many machines to detect when parts of machine are in or out of position.
For
example, they detect when
dishwasher and washing machine doors are closed so that water does not leak from the machine.
• Many magnetic switches are called reed switches. Inside a reed switch is a thin metal strip
(the reed)
that bends when a magnet is
close by. The bent reed closes a circuit to allow current to flow.
•
Other
switches use
moving
parts in a similar way.
Tilt
switches detect when a machine or part of a machine is tipped
over
to one side.
Inside is a ball bearing that rolls over two contacts in the same way as the disc in the Magnetic Alarm to complete a circuit.
• Tilt switches are on pinball machines to stop players from tilting the table to cheat!
E. OPERATION
2x2R
Content
Assembly
A
10
11
B
C
E
D
F
G
I
H
J
K
2x2R
Content
Assembly
A
10
11
B
C
E
D
F
G
I
H
J
K
