Carpal LX24 User manual

CAR ALARM USER’S MANUAL
GENERAL DESCRIPTION
This car alarm system is designed to provide not only all essential preventative security features but also
some user-convenience operations (such as trunk release, window-rolling up, lock/unlock doors, car finding)
with ease of operation and dealer installable high security and convenience options using the most advanced
technology.
SYSTEM PACKAGE CONTENTS
After you purchase this car alarm, please check whether all systems parts are packed. Please see the
illustration table:
1. Main unit
2. Transmitters (normally two unless ordered with one)
3. Special anti-robbery switch (green switch)
4. LED status indicating light
5. Reset switch (red switch)
6. Shock sensor
7. Starter-disable relay (to immobilize the engine)
8. Electronic siren
9. Wire harness (one 6 pin harness and one 9 pin harness)
10. Screws (used for mounting the main unit)
11. Ultrasonic sensor or microwave sensor (optional parts)
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TRANSMITTER BUTTON ILLUSTRATION
3-button transmitter: 4-button transmitter
-- Button A -- Button B -- Button C -- Button D
STANDARD FUNCTIONS AND FEATURES
1. TOARM THE SYSTEM The alarm system can be activated by pressing button A on the transmitter
after the vehicle is parked and doors are closed ( ignition switch is off). The system will respond with one
siren chirp and one headlight flash, doors will lock (provided the central door locking system is installed in
your vehicle), windows roll up automatically (provided the power window system is installed and windows
are not closed). 5 seconds later, the engine starter will be disabled and the engine will not start even using the
ignition key. LED status indicating light will begin flashing slowly. Now your vehicle is in the protection of
this alarm system. The system begins detecting ACC, foot brake and doors. The shock sensor begins working
after 30 seconds .
2. THE SYSTEM TRIGGER REACTION In arming mode, if the vehicle is impacted or doors are forced
open or ignition is turned ON illegally, the alarm system will be instantly triggered and respond with siren
sounding sharply and lights flashing rapidly unless pressing button B on the transmitter to stop the siren sounding
lights flashing and disarm the system. There are two types of siren sounds according to different trigger: if it is
some slight intrusion like a force hit on the vehicle body or knocking on the window, the siren sounds
intermittently for 15 to 20 seconds (you can stop siren by pressing button C on the transmitter), but it will not
sound when it is in mute alarm mode. If it is some serious intrusion like the doors are opened by force and the
engine start is attempted (ignition is turned ON illegally), the siren keeps continuous sound even in mute alarm
mode unless pressing button B to disarm the system or pressing button C to stop siren temporarily.
3. TO DISARM THE SYSTEM While the alarm system is in the armed mode, you must disarm the system
before entering the vehicle , otherwise the alarm system will be triggered. To disarm the system, simply press
transmitter button B, the system will respond with two siren chirps, three headlight flashes, unlocking doors,
enable engine starter, LED indicating light turning off.
4. INTRUSION REPORT If the system is triggered while you are away from the vehicle, it will report to you
that there was an intrusion by sounding the siren 4 times while disarmed. So you should look to see if there is any
danger inside the vehicle before getting in.
5. MUTE ALARM In some circumstances, if you don’t want to the siren noise disturbance, you can mute the
alarm by pressing transmitter button D in disarmed mode (for 4-button transmitter, responds with one lights flash
and locking doors, rolling-up windows, engine disabled) or pressing and holding button C for 3 seconds after arm
the system (for 3-button transmitter, by responding one siren chirp). In this mute alarm mode, any slight intrusion
and vehicle locating won’t activate the siren, but the serious intrusion (such as doors are opened or ignition switch
is turned on illegally)will trigger the siren. If you want to return to normal alarm mode, press button B to disarm
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then press button A to arm the system (for 4-button transmitter) or press and hold button C for 3 seconds ( for
3-button transmitter).
6. AUTOMATIC RE-ARM If the system is disarmed via transmitter and any doors are not opened within
approximately 25 seconds, the system will automatically re-arm itself. This feature guards against disarming
caused by accidental or unintended operation of the remote transmitter.
7. AUTOMATIC ARMING ALERT .5 seconds after you turn off the ignition switch and exit the vehicle ( door
is opened then closed), if you forget to arm the system, the siren will chirp twice to get your attention so you
should arm the system. If you still fail to arm the system, then the vehicle is not in the alarm system protection. So
please remember to arm the system while you are away from the vehicle, or please pre-set the AUTOMATIC
ARM function. (see below the programmable features)
8. AUTOMATIC CENTRAL DOORS LOCK/UNLOCK When arming or disarming the system, the doors
will lock or unlocked automatically. When driving the vehicle, pressing button A or button B will lock or unlock
doors without activating the alarm system.
9. VEHICLE LOCATING If you want to find your vehicle position in a big crowded parking lot, simply
press transmitter button C (whether your alarm system is activated or not), then you will hear the siren sound
intermittently for 15 seconds ( in mute alarm the siren will not sound) and lights will flash simultaneously for 15
seconds to indicate the vehicle position. You can stop sound and flash by pressing button C again.
10. EMERGENCY CALL If you are threatened or in any danger when you are driving (namely: the ignition
switch is ON ), you can attract attention and scare the threatening object off by pressing transmitter button C, the
system will respond with siren sound and headlight flashing for 15 seconds. You can stop the sound and flashing
by pressing button C again.
11. REMOTE TRUNK RELEASE Pressing and holding the transmitter button B for 3 seconds in disarmed
mode will be unlock and open the trunk automatically.
12. POWER DISCONNECTING MEMORY This alarm has built in memory on the main unit. Generally,
after alarm power is cut and reconnected, the main unit will read back the data make the alarm resume. When in
arm /disarm mode or anti-hijack position, power is off and on again, the alarm will read back the original position.
13. EMERGENCY OVERRIDE (DISARM SYSTEM MANUALLY) If your transmitter is lost or not
working while your system is armed, you can manually disarm your system by two methods:
1) Open the door (this triggers the alarm system) and turn the ignition switch to ON position with your key, push
the RESET SWITCH (a red switch on the main unit) and release it (the alarm power will turn off and on
again). Now the system is disarmed.
2) Open the door with key (this triggers the alarm system), step on the foot brake and turn the ignition switch
quickly from OFF to ON and back for 10.5 cycles ( OFF-ON-OFF-ON, this is two cycles), stop at OFF (must
finish these cycles within 10 seconds), the system will respond lights on, and “du….du..” two sounds. The
system will be disarmed in 3 seconds..
14. ANTI- HIJACK FUNCTION (IMMOBILIZING ENGINE) If you are threatened when you are driving,
you can enter anti-hijack mode with your remote control or a secret manual operation to immobilize the engine so
that your car is disabled and not able to be stolen.
1) Remote Anti-hijack: For 3-button transmitter: press button C (respond with headlight flashing and siren
sounding) then button A (respond with lights flashing rapidly), indicating entering standby anti-hijack mode. If
you press button A again within 5 seconds, then anti-hijack is executed, lights flash rapidly, siren sounds, 40
seconds afterwards, the engine will be immobilized. For 4-button transmitter, press button D (respond with lights
flashing and siren sounding), indicates entering standby anti-hijack mode. If now press button A, then it enters
anti-hijack mode, lights flashing rapidly, siren sounding, engine will be immobilized in 40 seconds. To exit
anti-hijack mode during standby anti-hijack mode or anti-hijack mode, simply press button B.
2) Manual Anti-hijack with Anti-robbery Switch: There is a green button on the main unit of the car alarm, in

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normal state, it is not pushed down. When it is pushed down in a necessary situation, the alarm anti-hijack
function will be engaged. Finally it will immobilize the vehicle engine so it avoids the robbery. This is normally
used when it is not convenient for the vehicle owner to use the remote control or the remote control is not with
him when the dangerous robbery is happening or the owner is forced to get out of the vehicle, he can secretly get
the alarm main unit and push down the green button before he leaves and remember to close the door well after he
leaves the vehicle ( must remember to close the door well, as the system will be activated as soon as the door is
closed well). Then the LED status indicating light will keep steady on, indicating entering anti-hijack mode, lights
flash, 40 seconds later, the siren sounds continuously, lights flash intermittently (200ms lighting and 200 ms
interval ), engine is immobilized. To exit anti-hijack mode, pull out the anti-robbery switch (the green button).
15. VALET MODE If you are going to have your vehicle serviced, repaired, parked by valet or washed, you
will want to put your security system into valet mode. When the system is in the valet mode it cannot be armed.
The door lock and unlock will function as a keyless entry system, namely , button A and B will work as lock and
unlock doors, but all the other functions and other buttons will not function. In this mode, the LED status
indicating light is off. To enter valet mode, please see the program table below.
16. TRANSMITTER CODE LEARNING This system can expand to 4 different transmitters and comes from
the factory with two transmitters already programmed into the system memory, whenever you want to add a new
transmitter or delete lost transmitter code of the system, just follow the following instruction:
1) In disarmed mode, get into vehicle, close door well, step on the footbrake and push, then open the door (lights
will flash if “door open notice” feature is selected)
2) Put the key into ignition lock turn from OFF to ON for 3 cycles and stop at ON position, namely,
OFF-ON-OFF-ON-OFF-ON, now the lights begin steady on, indicating it enters code-learning process.
3) Press any button of the new transmitter and hold the button for 3 seconds, until you hear 3 siren chirps,
confirming that code-learning is successful, this new transmitter is learned by the system..
4) To program the second, third or fourth transmitter codes, repeat step 3. Siren chirps to confirm that each
transmitter is learned. A total of 4 transmitters can learn the code. If a fifth transmitter is learning the code, then
the previous 4 transmitter codes will be erased.
17 TRANSMITTER CODE DETETING If transmitter is lost by accident, please remember to delete its code
in the system memory, so the lost transmitter will not be effective hence not be able to remotely control the
vehicle alarm system. This is to protect the system security. The procedure is:
1) In disarmed mode, get into vehicle, close door well, step on the footbrake and push, then open the door (lights
will flash if door open notice feature is selected)
2) Turn the key into ignition switch turn from OFF to ON for 5.5 cycles stop at OFF position, namely,
OFF-ON-OFF-ON-OFF-ON-OFF-ON-OFF-ON-OFF (must finish it within 10 seconds), now the lights begins
steady on, siren chirp 2 chirps, indicating all old transmitters are erased in system memory.
18. PNEUMATIC LOCK AND SOLENOID LOCK OPTION Vehicle lock is of generally two types:
pneumatic lock and solenoid lock (power lock). There is a jumper switch for selection of these two lock options
on the main board inside of the alarm main unit. Factory setting is solenoid lock, the output time of the central
lock system is 0.5 seconds (JP1 is open-circuited). If your vehicle is of pneumatic lock, then you can open the
main unit, find the jumper switch JP1, make it short-circuited with ground, then it fits for pneumatic lock. The
output time of the central lock system is 3.5 seconds.
19. ULTRASONIC SENSOR OR MICROWAVE SENSOR INPUT ( OPTIONAL PART) There is a
3-pin jack for other sensor inputs, like ultrasonic sensor, microwave sensor or audio sensor on the alarm system
main unit. The user can buy and install any of those if necessary. The sensor can work together with the alarm
system. If the sensor is triggered, then the system is triggered and gives warning. Ultrasonic sensor detects
moving object, microwave sensor detects attacking by force, audio sensor detects high-frequency sound (like
window glass break sound).

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PROGRAMMABLE FUNCTION AND FEATURES
1. PASSIVE ARMING (LAST DOOR ARMING ) This feature is programmable. Factory setting is
“without”. If set “with”, when ignition is off, the driver leaves the vehicle and closes doors well, 25 seconds after,
the system will be armed automatically. (if set “with” this feature, then the previous AUTOMATIC ARMING
ALERT feature will be invalid).This is to protect your vehicle in the event you forget to arm the system using the
transmitter. You can choose whether you want to set “with” this feature according to your personal practice. To
select “with” this feature, please see below PROGRAMMABLE OPERATION TABLE.
2. IGNITION TRIGGERED DOOR LOCK/UNLOCK This feature is programmable. Factory setting is
“without”. If set “with”, the system will lock the doors automatically when the ignition is turned on while doors
are closed well (if doors are not closed well or ignition is not turned on, then it will not lock) and unlock when
turned off. To select “with” this feature, please see below PROGRAMMABLE OPERATION TABLE.
3. DOOR OPEN ALERT This feature is programmable. Factory setting is “without”. If set “with”, then before
driving, any doors are not closed well, if ignition is not ON, then the vehicle lights will flash for 30 seconds
unless the doors are closed well, if ignition is ON position, then the vehicle lights will flash all the time until the
doors are closed well. This is to give warning to driver to close door also give warning to other vehicles behind
to keep away from this vehicle. To select “with” this feature, please see below PROGRAMMABLE
OPERATION TABLE.
PROGRAMMABLE FEATURE TABLE:
TO SET "WITH" TO EXIT "WITH"
FEATURE 1. Turn Ignition Switch
from OFF to ON
2.Transmitter
Operating
3.
Confirmation Operation Confirmation
PASSIVE ARMING
(LAST DOOR ARMING)
3cycles
( stop at "ON")
Press Button
A for 3
seconds
2 chirps
3 flashes
press button
B for 3
seconds
1chirp
3 flashes
IGNITION TRIGGERED
DOOR LOCK/UNLOCK
4cycles
( stop at "ON")
Press Button
A for 3
seconds
2 chirps
4 flashes
press button
B for 3
seconds
1chirp
4 flashes
DOOR OPEN ALERT 5cycles
( stop at "ON")
Press Button
A for 3
seconds
2 chirps
5 flashes
press button
B for 3
seconds
1chirp
5 flashes
VALET MODE 6cycles
( stop at "ON")
Press Button
A for 3
seconds
2 chirps
6 flashes
press button
B for 3
seconds
1chirp
6 flashes
Note: to set “with”, step 1 to step 2, must operate within 5 seconds. Before setting, the system must be in disarmed
mode.
SYSTEM INSTALLATION INSTRUCTION
1. MAIN UNIT INSTALLATION Determine the installation location of the main unit first. The main
unit should be installed in a hidden location where it is not subject to high temperature, moisture and away
from other electronic equipment in the vehicle. Normally it is placed under instrument panel close to the
driver’s seat. The driver must keep in mind the position of the main unit specially the special anti-robbery
switch placement (green button on main unit) so he can use it when needing anti-hijacking feature in danger.
Insert the harness plug into the main unit, use tape to secure the front end of the harness, then locate the
vehicle ignition wires, parking light wires, footbrake wire, door opening signal, power supply wire etc,
connect them with main unit related wires according to the circuit diagram. The Antenna on main unit must

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be pull out straightly, don’t fold, cut short, or touch with other things. See Alarm System Wiring Diagram.
2. SHOCK SENSOR INSTALLATION After installing the main unit, mount the shock sensor under the
dashboard and stick it closely to the inner wall of vehicle body without any shock pad. Please remember the
position where the shock sensor is mounted. It will cause false alarm if it is too sensitive, or it will fail to
alarm if it is too insensitive. The sensitivity of shock sensor can be adjusted moderately according to the
environment and user’s demand to make it work reliably. There is a LED light and a small sensitivity switch
on the shock sensor body. When shock sensor is triggered, the LED light will be on. Adjust the switch to
“L” direction to reduce sensitivity, to “H” direction to increase sensitivity. Note: factory setting is adjusted
optimally. Don’t adjust it if not necessary.
3. CENTRAL DOOR LOCK SYSTEM INSTALLATION In case you vehicle is not furnished with a
central door locking system, it is suggested to buy and install a central door locking system ( most vehicles
door trigger is negative , so mostly see negative type Figure A as reference ), then the alarm system can
work with the central lock system, the transmitter can remotely control door locking and unlocking.
Central lock system installation method: remove the door trim first, find a suitable location near the manual
switch lever inside door to mount the central-locking. Use the fittings provided to fix the lever of the
manual switch and the central-locking motor together, in this way, the motor will actuate the door lock
lever.
If the car is originally equipped with a central-locking system, then please refer to below these four types of
wiring diagrams to connect the central locking system with car alarm system, though there are many
different models of central locking systems, but mostly they are divided into these four types.
A. Negative Trigger Type: if the car is originally equipped with a central-locking system, and there is a
seesaw switch near dashboard which controls the other 3 door locks, therefore, the first thing is to find
out whether it is negative trigger or positive trigger. If it is negative trigger, please see Figure A for
wiring. Applicable car models: HONDA, TOYOTA.
B. Positive & Negative Trigger type: if the car is originally equipped with a central-locking system, but the
driver’s door contains only one switch which drive the other 3 doors to lock and unlock, therefore, a
two-wire actuator must be fitted in the driver’s door to drive the door latch lever and the switch. See
Figure B. Applicable car models: FORD, MITSUBISH, MAZDA, and NISSAN.
C. Positive Trigger Type: if the car is originally equipped with a central-locking system, and there is a
seesaw switch near the dashboard which controls the other 3 door locks, therefore, the first thing is to
find out if it is negative trigger or positive trigger. If it is positive trigger, please see Figure C for wiring.
Applicable car models:. RENAULT, GM ( mostly USA made car )
D. Pneumatic Central-locking Type: if the central locking system is pneumatic actuation not a power lock as
above mentioned, please see Figure D. Applicable car models are : AUDI, MERCEDES-BENZ.
E. In case there are other vehicle models central lock system which are not listed here, generally see Figure
A as reference.
TIPS FOR TROUBLE SHOOTING
1. The siren keeps sounding after the main unit is installed, even it can’t be stopped with the
transmitter.
a. check if the wire connection is correct
b. check if the power supply fuse is burn out.
c. Check if the transmitter code matches the main unit code.
2. The central locking system doesn’t work well.

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a. check if the actuators work.
b. Check if the central locking system connection with car alarm is correct.
c. Check if the fuse is burn out.
3. The car alarm siren doesn’t sound when the system is triggered.
a. check if the siren is normal.
b. Check if the connection between the siren and the car alarm main unit is correct.
c. Check if it is in mute alarm mode.
4. The siren starts sharp sounding 10 seconds after the alarm system is activated, even it keeps
sounding after it is disarmed.
a. check if the shock sensor is good.
b. Check if the shock sensor sensitivity is too high, adjust it to lower sensitivity.
c. Check if the wire connections are correct, especially the brake light, door trigger wire. And check if
the doors are closed well.
5. The siren sounds when heavy trucks or large vehicles pass by, or the siren sounds wrong.
a. check if the shock sensor is too sensitive. Adjust it to a lower sensitivity.
6. The LED light on the transmitter is not alight, the transmitter doesn’t work.
a. check if the battery in the transmitter is lower than 10 voltage.
b. Check if the transmitter has been soaked into water.
c. Check if the transmitter has been dropped badly.
d. Use an other transmitter to check and compare then to find out if one of the transmitter is wrong and
where is wrong. If two transmitters both don’t work normally, then please check if there are any
faults in main unit antenna, wire connection, power supply ..etc, no need to open the transmitter . If
finally find out it is due to the transmitter, then please buy extra transmitters to replace with the old
ones.
TECHNIC SPECIFICATION
MAIN UNIT:
Working Voltage: DC+12V±3V
Static Current: ≤10MA
Current in Alarming: 0.1-0.2A
Working Temperature: -20℃- +80℃
Max. output Current: headlight: 2 X 5A. Siren: 10A. Central Locking: 10A
Transmission Frequency: 315MHZ±0.5MHZ
Transmission Distance: 100 meters
TRANSMITTER:
Working Voltage: DC+12V±3V
Working Frequency: 315MHZ±0.5MHZ
Working Current: ≤10MA
Battery : 12V/27A
Transmission Distance: 100 meters
Code System: learning code
UN-unique Code Rate: ≥1 million

ALARM SYSTEM WIRING DIAGRAM
JP1
Starter
1. power window
2. trunk release
3.door trigger (negative)
4.Engine immobilizing
5.
Ignition On
1. Brown direction light
2. Brown direction light
3. Red power supply (+12V)
4. Green Door trigger ( positive)
5. Black Power supply (-)
6. Pink Siren
7. Orange
8. White
9. Yellow
10.Orange / black
11.white/ black
12. Yellow/ black
Shock sensor
Ultrasonic sensor
6. footbrake
Special Anti-robbery Switch
Reset Switch
LED indicator
Relay
white
ACC
+12V
green
ACC-ON
Brake light
Footbrake
No.7-12 for Central door
lock connection
SCHEMAIC DIAGRAM FOR CENTRAL DOOR LOCK INNER INTERFACE
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