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GSM pager CA-1803BT „Athos“  

 

 

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MHF56801

Installation manual: CA-1803BT “Athos” – mode 3 

GSM pager for cars with an installed car alarm 

 

Main features for this mode: 

• 

Sending SMS messages automatically after the inputs have been 
activated and sending information SMS messages to up to 4 
mobile phones. 

• 

Dialling pre-programmed phone numbers after input activation 
and giving an acoustic warning signal. 

• 

Monitoring the vehicle‘s movement via GPS (Global Positioning 
System). 

• 

Passing data to the central monitoring station. 

• 

Remote immobilization (blocking the circuit) via SMS instructions. 

• 

Remote control and programming of the CA-1803BT from a mobile 
phone. 

• 

Hands-free calling and remotely listening-in to a space (receiving of 
any incoming calls and dialling up to 4 pre-programmed phone 
numbers). 

• 

Extension of functions via the CR-11A module, for example, operating 
an independent car appliance via SMS (12V only). 

• 

Internet access and configuration from the www.GSMLink.cz web site.

 

 

    

Before installation

 

The CA-1803BT GSM pager should only be installed by a professional 

installer. It is designed to be installed inside a car. A voltage supply of 12V 
or 24V is required with a negative ground connection. During the first 
power-up, the value of supply voltage is read and the inputs are set to 
default settings.  

Disconnect the car battery before starting installation. For airbag-

equipped cars, no person is allowed to stay inside the car while handling 
the battery. Disconnecting the battery can cause a reset of some of the 
car’s devices (e.g. clock, default settings etc.). Avoid drilling into the metal 
parts of the car body. The manufacturer is not responsible for damage 
caused by any incorrect or unsuitable application of the product. 

For crimping, special purpose tools should be used. If you do not use 

some of the cables, cut them off at a distance of 10cm from the connector, 
insulate them properly and tie them into a bunch. 
 

For cars with a voltage supply of 24V, the following restrictions 

apply to car alarm installation

1.  It is not possible to connect a hands-free set of type HF-03. 
2.  When used for acoustic signalling, the SIR output is switched to the 

power supply voltage. Consequently, this output switches to 24V, so it 
is necessary to use a siren of type SA-606-24V (instead of the SA-530 
which is supplied in the standard package). 

 

The wiring

 

• 

Yellow

 – output 

siren

 – switches to +12V (24 V) / max. 1.3 A for 30 

seconds after input activation (optional). 

 

• 

Grey – instant activation

. It reacts to connection or disconnection 

from ground  The reaction time is 70ms.

 

• 

White – input INP

. It reacts to a connection or a disconnection from 

the ground  The reaction time is 3 seconds.

 

• 

Blue – 

signals 

that the ignition key is turned on. 

Reacts to +12V 

(24V). When you are installing it inside a car, make sure that a voltage 
is present in the connecting wire while starting. The activation of input 
INP is blocked during the ignition key input activation and, if installed, a 
hands free set can be used. 

 

• 

Green

 

– LED indicator

 – should be installed in a visible place on the 

dashboard. 

 

• 

Black – ground 

– connect to the original grounding point.

 

• 

Red – power 12V (24V) - 

connect directly to the battery. The 

power should be turned on only after a thorough check of the whole 
installation has been made!

 

• 

Orange – back-up battery 

– connects to a back-up battery of type BB-

02 (capacity 450 mAh, consumption up to 20 mA.). This feature is 
optional.

 

• 

2x Brown 

– immobilization circuit (max. 8A constantly, 12A 

intermittently).  

• 

Pink

 –  

output AUX – 

bus communication for modules CR-11A 

It is possible to 

attach a hands-free set

 of type HF-03 

1

. Using this you are 

able to phone via the GSM pager, and also to remotely listen-in after the 
immobilization circuit has been blocked. The HF set connects to the RJ 
connector on the front side of the car alarm unit. 

 

SIM card insertion 

1. 

Make sure, that the 

PIN number on the SIM is disabled

. If the SIM 

card does not allow you to switch the PIN off, set the PIN to 0000. 
Remember (note down) the phone number of your SIM card. It is 
recommended to delete all original records in the SIM card’s phone 
directory.

 

2.  Insertion of the SIM card

: using a thin object, press the yellow peg 

in order to pull out the SIM card holder (the front side of the unit), 

                                                      

1

 

these accessories are optional

 

insert the SIM card into the casing with the conducting contacts facing up 
and push the casing back carefully up to the sticking point.

 

3. Install and attach the GSM antenna– 

(the GSM pager must not be 

connected to a power supply unless a GSM antenna is connected !!!). The 
antenna is equipped with an adhesive tape and has to be stuck onto the car’s 
window. The antenna must not be installed to metal parts. The antenna should 
not be installed close to the pager or near other electronic devices. It is 
recommended to install the antenna in a place where it is not easily visible (like, 
for instance, on a tinted part of the window). Clear and dry the spot carefully. 

 

4. Install provided GPS antenna

 - place the antenna so that it will not be 

shielded by metal parts of the car. It can be installed just under the top part of a 
dashboard (turned with the black plastic cover upward) (the antenna can be 
shielded by plastic materials). Wrap both  connectors using plastic sticky tape as 
they are connected to GND. 

 

5.  Check the wiring

 and connect the power supply. A flash of the indicator and 

a beep of the siren (if connected) indicate connecting to the GSM network. Wait 
until the indicator turns off (up to 1 minute). After that the CA-1803BT is logged 
in to the GSM network.

 

If the flash does not disappear within 1 minute, it means that the login 
process failed. If such a case occurs, turn off the power supply, pull out the 
SIM card, ensure that the SIM contacts are clean, insert the card into a 
mobile phone and check, whether a connection can be established in that 
particular place. Also make sure that the SIM card‘s PIN is turned off (or that 
it is set to 0000). If the mobile phone connection check is successful, return 
the SIM card to the GSM pager and repeat the whole procedure. At least 10 
unused positions for phone numbers are required in the SIM card memory. 

After turning the power supply on 

In order to use the functionality of the GSM pager according to your needs you first 
have to set up its logic and behaviour by the RESET command.  Subsequently, 
phone numbers and other optional parameters should be set up and an RC-8x key 
fob can be enrolled. The set-up can be done in the following ways: 

• 

·

by editing a record in the SIM card phone directory

 (it is the simplest 

setting method but limited to some functions only, see table 5.1).  These settings 
(which determine the devices‘ behaviour) are read from the SIM card after each 
powering up of the car alarm. After the initial powering up of the new car alarm 
with a new (blank) SIM card, configuration records (names) are created in the 
SIM card’s phone directory and the default values set. But in the case that the 
alarm had been set before and a new (blank) SIM card is inserted then the 
stored parameters are copied from the internal memory to the SIM card. This 
will help you after SIM card changing. You can perform basic settings of some of  
the car alarm’s functions by pulling the SIM card out of the alarm (after the 
power supply has been disconnected) and subsequently inserting it into a 
mobile phone where you assign numbers to the names of functions displayed in 
the phone directory from the SIM. See table 5.1 for setting the car alarm’s 
optional parameters. Settings from the SIM card are read after its insertion and 
powering up. 

 

• 

via the Internet page www.GSMLink.cz

 which is the most convenient 

way. To register there you need the registration code printed on the 
warranty card and the master code (factory default is MASTER). For more 
information, see chapter 10. 

• 

by sending command SMS messages

 via a mobile phone, see table 5.1. 

 

Using the CA-1803BT as a GSM pager, it is necessary to set RESET EN 3.  
You can perform it by an SMS instruction “MASTER RESET EN 3” which 
has to be sent to the GSM pager’s SIM card number. Performing a RESET 
is indicated by 4 beeps. The factory default is RESET 0 without any function 
assigned, except that the immobilization relay switches on after the ignition 
key has been turned on. It is possible to put the GSM pager to RESET 0 
mode also in the case, that its functionality should be cancelled entirely. 
By carrying out a RESET, you delete all the GSM pager settings as well as 
all the previously enrolled remote controllers and wireless sensors.  
 
 

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