NAVTELECOM SIGNAL S-2651 User manual

GPS/GLONASS TRACKING EQUIPMENT
SIGNAL S-2651
Operations manual
Installation and connection of the device
MOSCOW
2020

Dear customer!
This Operations manual provides information about main issues relating to the functioning, installation, and
operation of the device.
Customers are strongly advised to study this document carefully before the installation and operation of the
device.
Navtelecom LLC is interested in constantly improvement of the manufactured products quality.
Please, contact our technical support by email address: [e-mail] should you have any questions
or problems with the device.
It is possible to download software, documentation and get detailed information on the manufacturer's website
https://navtelecom.ru.en
We thank you for purchasing of our product! We are sure that if operation of the equipment is correct, it will
reliably serve you for a long time.

CONTENTS
CONTENTS......................................................................................................................................2
1. BASIC CHARACTERISTICS ......................................................................................................3
1.1 Purpose of the system.......................................................................................................3
1.2 System tasks......................................................................................................................3
1.3 Operational principles .......................................................................................................3
1.4 Basic technical characteristics ..........................................................................................4
1.5 Appearance of the device ..................................................................................................9
1.6 Standard equipment set ..................................................................................................10
1.7. Device components ........................................................................................................14
1.8 Device interface connector .............................................................................................16
2. DEVICE CONNECTION ...........................................................................................................18
2.1 Installation ......................................................................................................................18
2.2 SIM-card installation and operation ...............................................................................18
2.3 GSM- and GLONASS/GPS antennas connection .............................................................20
2.4 Power connection ............................................................................................................20
2.5 Universal inputs connection............................................................................................21
2.5.1 Analog sensors connection .......................................................................................21
2.5.2 Discrete sensors connection .....................................................................................21
2.5.3 Pulse frequency sensors connection ........................................................................24
2.6 Built-in accelerometer.....................................................................................................25
2.7 Control outputs connection.............................................................................................25
2.8 1-Wire informational interface (IButton) connection....................................................28
2.9 Amplifier connection for voice information ....................................................................30
2.10 CAN-interface connection .............................................................................................30
2.11 RS-232 interface connection.........................................................................................32
2.12 RS-485 interface connection.........................................................................................33
2.13 Speaker and microphone connection ...........................................................................34
3. LED INDICATION...................................................................................................................35

1. BASIC CHARACTERISTICS
1.1 Purpose of the system
The equipment is a GPS-GSM Based Vehicle Tracking System. It is allowed to use the following terms in relation
to this device: “system”, “product”, “equipment”, “device” “terminal”, “tracker”.
The system is designed for:
vehicle monitoring: its location, track, mileage, fuel consumption, engine hours;
driving style determination (EcoDriving);
crush event fixation in accordance with acceleration thresholds or Addiction Severity Index (ASI);
emergency informing about vehicle hijacking;
emergency informing about attacks on the driver or passengers and other accidents;
processing and transmitting of data to the server from devices such as tachograph, tire pressure monitoring
system, CAN bus adapter, refrigerator controller, RFID tag reader;
monitoring the temperature using temperature sensors;
remote control of connected devices and vehicle systems, such as a siren, engine and door lock system, etc.
Recipients of information from the system can be:
centralized dispatch centers;
end-users (corporate and private car owners, proxy persons, etc.)
1.2 System tasks
The system operation consists of the following tasks:
telemetering record of vehicle location, speed, direction and mileage according to the GPS/GLONASS satellite
information;
telemetering record from the contact, impulse, analog connected sensors and CAN bus; monitoring of vehicle
battery voltage and device built-in battery voltage;
fuel consumption, drains and fills monitoring; mileage monitoring; stoppage time and off-track monitoring;
places of cargo loading/unloading monitoring;
events data record to the nonvolatile memory, possibility of its remote reading and analyzing;
sustained or specified time period transmission of information about current and past events on the vehicle
via GPRS-channel to the telematics server for further analyzing, visualization and report formation;
customer SMS informing on sensors activation;
connected external devices control (for example, siren on/off) by SMS command or by preset settings in
automatic mode;
control of cargo safety by comprehensive measures; improving driver and passenger’s safety.
1.3 Operational principles
The device during its operation continuously monitors the status of the connected sensors, vehicle battery
voltage, built-in device battery voltage, GSM modem signal level, operational capability of navigational sensor
(GPS/GLONASS), etc.
At power-up or USB connection to a computer the device automatically turns on. At power-off or USB
disconnection the device continues its operation from built-in battery. The device turns off when the built-in battery
is discharged to 3V.
Upon the occurrence of an event set by the device logic (set by the user or device manufacturer), the
telematics information is recorded into nonvolatile memory and is sent to tracking platform as a message with a set
of parameters. Events for messages formation can be change of direction, timer activation in motion or in stand,
activation of input sensor, value changes of analog or digital sensor, etc. Each message is recorded with its sequence
number and has its own code that determines the reason for its formation. When sending message packets after
reconnecting to tracking platform, the earlier messages are sent first. Some messages generated by “alarm” events
(pressing the panic button, impact sensor detection, etc.) are sent out of turn, immediately after the “alarm” event
has happened. After message packet sending to the server, the device is waiting for server answering. If there is no
answering from the server, the device will try to send message again until it receives answering about data
transferred, in this case the next packets from the queue will not be sent. This algorithm set in the data transfer
protocol ensures reliable sending of all messages to the server, even in case of data transmitting failure.
The device operation parameters are configured using proprietary software, the NTC Configurator program.
For proper software operation there is a requirement for a computer with MS Windows 7 or higher operating system.
It is also possible to perform basic settings via Bluetooth, USB, GSM channels using the NTC Control program
- a mobile application for smartphones and tablets running the Android operating system.

1.4 Basic technical characteristics
Tab 1
S-2651(M)
GSM/GPRS/Bluetooth
3G modem
no
GSM frequency bands
GSM 850, EGSM 900, DCS 1800, PCS
1900
IP-stack protocols
TCP, UDP
Transmitter power
Class 4 (2W) in GSM 850 and EGSM
900;
Class 1 (1W) in DCS 1800 and PCS 1900
Maximum speed of data transfer/reception, kbit/s
85,6
SIM card holder 1
external with ejector (Molex), miniSIM
SIM card holder 2
internal, nanoSIM
SIM chip1
2
GSM-signal jammer detector
yes
Bluetooth
yes, v 4.0
GNSS
Supported navigation systems
GLONASS/GPS/Beidou
Number of channels
tracking: 33, picking-up: 99
Sensitivity (in laboratory conditions)
tracking: -165 dBm
cold start: -148 dBm
Time of first coordinates determination (for GPS and GLONASS systems with
a signal of -130 dBm)
cold start: <35 sec
warm start: 30 sec
hot start: <1 sec
Coordinates error, (50% CEP, 24 hours in static mode, with
signal levels -130 dBm), m
2.5 (in plan), 5 (in height)
Speed determination error is less than, m/s
0,1
Coordinate update rate, Hz
1
Power supply
Operation supply voltage, V2
9,5…47
High voltage pulsation protection and prolonged overvoltage up to 200V
yes
Current consumption at 12 V voltage in operation mode on
average3, mA
80
Current consumption at 12 V voltage with turned off
GLONASS and GSM modules is no more than, mA
30
Maximum current consumption at 12 V voltage in the operation with the
charge of the battery is not more than, mA
200
Protection against polarity reversal with the connection to the exterior supply
source
yes
Battery4
Li-Po 3,7 V, at least 800 mAh
Battery protection from recharge, full discharge, short circuit5
yes
Maximum operating time of the device from the fully charged battery
(without external power) is at least, h
5
Time of full charge of the battery is not more than, h
6
Backup battery of the RTC clock and the navigation module
yes
Time of keeping of the RTC clock rate and ephemeris in a navigation module
(with the power off and discharging of the battery) is at least, days
5
Battery charging from USB
yes
Inputs
Inputs protection against power surges, V
Up to 200
Total number of universal (analog, discrete, pulse-frequency) inputs
6

Number of pulse-frequency inputs used for frequency fuel level sensors
connection or for rectangular pulses calculation
Up to 6
(as a part of universal)
Working range with frequency fuel level sensors, Hz
1 –3000
Number of analog inputs, configured as discrete
Up to 6
(as a part of universal)
Measuring range by inputs, set up as analog, V
0…31
Built-in pull-up resistor for discrete inputs
yes
Outputs
Number of outputs of the “open collector” type for the external devices
control
4
Maximum switching current by the control outputs, mA
500
Maximum switching voltage by the control outputs, V
48
Interfaces
USB interface for configuartion, device control, data transfer and
diagnostics
yes
Digital interface RS-485
yes
Digital interface RS-232
yes
CAN digital interface
1
1-Wire interface
yes
Device memory
Volume of non-volatile memory, Mb
8
Number of records in non-volatile memory (by type of ring buffer) with
telematics record package less 127 bytes
Up to 51700
Data recording period in the internal storage device, s
1 —3600
And/or upon the event
MicroSD-card support with the memory up to 32 Gb
yes
Function of telemetry record to microSD-card
yes
Telemetry records number on microSD-card
no less than 2 000 000 per 1 Gb
Accelerometer
Accelerometer with built-in configured shock sensors, displacement and tilt
sensors
yes
Measured acceleration range, g
+/-24
Acceleration errors in the range of +/-24g less than %
0,5
Accelerometer calibration using information from the GLONASS/GPS
module in normal vehicle motion
yes
Configuration and management
USB interface for configuration, control and data transfer
yes
Device configuration with the NTC Configurator
yes
Firmware updating and settings changing by GPRS channel
yes
Automatic firmware update function
yes
Possibility to change settings by SMS
yes
Possibility of tone control and GPRS, SMS and DTMF control
yes
Data transfer
Data transferring by GSM by SMS, GPRS
yes
Optional selection of transmitted parameters to save traffic
yes
Sending information in roaming about the current state of the specified
timers in motion and in stand, with the subsequent unloading of all the
accumulated data in the home network
yes
Configuration of the priority operators list in roaming
yes
Operator settings automatic detection based on SIM card registration in a
GSM network
yes
EGTS protocol support
yes
FLEX and FLEX 2.0 protocols support
yes

FLEX 3.0 protocol support
yes
Number of servers (IP addresses) for synchronous receiving of telemetric
data
3
Sending telemetry data to the server repeatedly by SMS or GPRS request
for the period
yes
Output of user and debug logs from GSM modem, GPS receiver and
interfaces
yes
Data transferring in TCP and UDP
yes
The number of subscribers for SMS-alert
5
Functionality
EcoDriving function
yes
Vehicle evacuation tracking
yes
Crush event determination in accordance with acceleration thresholds or
Addiction Severity Index (ASI)
yes
Formation and sending accident profile file to the server
yes
Immobilizer function using driver identification system by Proximity cards
and 1-Wire interface
yes
Programmable power-saving mode with the ability to disable
GLONASS/GPS and GSM-modules
yes
Device operation on the timer or by the calendar
yes
Security mode
yes
GSM-signal jammer detector
yes
GNSS jammer detector
yes
SMS sending according to speeding event
yes
Determination of engine operation and engine hours calculation by the
voltage in the vehicle electrical system
yes
Sensors selection for engine hours calculation
yes
Tachometer function with engine speed calculation
yes
Providing LBS information from three nearest towers cell towers
yes
Data encryption according to the AES128 standard in data transfer
yes
Real mileage measurement algorithm with the terrain features
yes
Sensors selection for coordinate averaging
yes
Configuration of data averaging over all inputs for fuel level sensors
yes
Ability to stop operation of fuel sensors under specified conditions
(lowering the supply voltage below the threshold, turning off the ignition,
turning off the engine)
yes
Configuration of outputs operation (continuous, single, periodic)
yes
Digital fuel level sensors connection by RS-232 interface
yes
The maximum number of connected digital fuel level sensors by RS-485
interface
16
Ability to calibrate LLS fuel level sensors in the device
yes
Synchronic operation of fuel level sensors (LLS) and tachographs (Shtrih,
Mercuriy, Atol) on RS-485
yes
MODBUS RTU protocol support
yes
Operation with RFID-tags readers "Escort" ("Radius"), "ADM20", "Mielta"
and LLS-compatible
yes
NMEA string output from the navigation module by RS-485 interface
yes
CAN interface with J1939 standard
yes
Support of CAN protocols other than J1939 by decoding files
yes
Parsing CAN parameters by user settings
yes
Operation with CAN buses of J1708 standard via RS-485 interface
yes
CAN-LOG and CAN-FMS adapters support
yes
DTA-CAN CAN adapter support
yes
Connection a Bluetooth headset for two-way communication with the driver
yes

Bluetooth connection for up to 4 wireless fuel level sensor (ESCORT TD-
BLE, TECHNOTON DUT-E, GL-TV)
yes
Bluetooth connection for up to 4 wireless temperature and humidity
sensors (ADM31, ESCORT TL-BLE)
yes
Bluetooth connection for ADM32 wireless tilt angel sensors
yes
Bluetooth connection for TECHNOTON GNOM DDE wireless axle load
sensors
yes
Bluetooth connection for TECHNOTON DFM wireless fuel level sensor
yes
Bluetooth connection for ELM327 diagnostic adapter
yes
Transparent mode7
yes
Unloading of ddd-files from «Shtrikh», «Mercuriy», «VDO Continental»,
«Atol»8tachographs
yes
Events sending on tachograph state change
yes
Driver display DV-01 support
yes
Text messages display received from the server or by SMS on DV-01 driver
display
yes
Built-in “Autoinformer” function
yes
Support of route sign boards “ITLINE” and “Integral”
yes
Display of information about current route, current and next stop on the
DV-01 driver display when the “Autoinformer” function is on
yes
Monitoring compliance with speed limits by geofences
yes
Display of information about set speed limit and overspeed warnings on
the DV-01 driver display
yes
Display of information about the fuel level in liters from 4 LLS fuel level
sensors on the DV-01 driver display
yes
Connection of passenger flow meters “PP-01” and “Avtokonduktor”
yes
Camera connection support, sending pictures to the server upon the
request
yes
Using of information from tire pressure sensors “Pressure Pro”, “TPMS 6-
13” (from “Parkmaster”), “B-Tag” (from “Bridgestone”), TM508T22U and
“TD 18, 20, 21”
yes
Operating with breathalyzer “Alcogran AM-525”
yes
Interface for connection of digital temperature sensors
1-Wire
The maximum number of connected digital temperature sensors by 1-Wire
8
Events formation about reduce/increase of temperature
yes
Reading TouchMemory key codes and drivers identifying by 1-Wire
yes
The maximum number of TouchMemory key codes stored in the device
memory without SD-card
510
Connection of microphone and loudspeaker to establish a speakerphone
with a driver and microphone listening
yes
Resistance and power of the connected loudspeaker
4 ohm –from 1,5 up to 5 watts
8 ohm –from 1,0 up to 3 watts
Connection to buzzer output line for notification of an incoming call
yes
Performance specifications
Storage temperature with the battery9, °C
0 … +40
Storage temperature without the battery9, оC
-40 … +85
Operating temperature with the battery10, оC
-20 … +60
Operating temperature without the battery10, оC
-40 … +85
Temperature at which the battery is possible to charge, oC
0 … +50
Maximum allowable humidity level at 35 oC, %
95
Maximum allowable overload during impacts, g
24
Design features of the device
External GLONASS/GPS and GSM antennas
yes
Plug for connection to the computer
miniUSB

Connectors for GLONASS /GPS and GSM antennas
SMA
Interface connectors
Microfit-14, Microfit-6, Microfit-4
Enclosure material
ABS plastic
Enclosure protection level
IP54
Intrusion detector
yes (only in S-2651M)
Device dimensions with connectors, mm
105х78х20,5
Device weight, kg
0,087
1- Optional.
2- If maximum operating voltage is exceeded the power protection is activated. The device continues to work, but
is powered by the battery (if available).
3- If GPRS operates in poor communications, peak consumption (10 ms), consumption of the device can accede 500
mA.
4- Attention! Lithium polymer battery (Li-Po) is used in the device. The following rules must be observed during its
operation: not to heat, keep away from sources of heat, not to throw the battery into the fire, not to expose to direct
sunlight. The device, for power of which Li-Po battery is used, cannot be used in high humidity, high and low ambient
temperatures. Operation is permitted under the conditions specified by the manufacturer. Not to hit, not to deform,
not to disassemble, not to close contacts.
5- Protection against battery charge while it is overcooled or overheated.
6- Only when using the RS-232/RS-485 interface converter.
7- To connect the SIGNAL devices to the ATOL Drive 5 tachographs, an UART / RS-232 converter is additionally
required.
8- A mode in which information received via the RS-232 and RS-485 interfaces is not processed by the device, but
is buffered and transmitted to the server as is.
9- When the device is stored and used outside the specified temperatures, it is recommended to turn it off and
remove the battery from the device to avoid damage to the battery and to the device.
10 - If the device is operating outside the specified temperatures, irreversible change in the properties of the Li-Po
battery, a decrease in capacity, current output can occur.

1.5 Appearance of the device
On the front part of the device unit (figure 1) is located:
14-pin connector of Microfit-14 type for connection of power supply, digital and analog sensors and control
lines.
6-pin connector of Microfit-6 type with leads of CAN bus interface, RS-485 interface and RS-232 interface;
4-pin connector of Microfit-4 type for connection of 2-way speakerphone interface;
SMA connector for connecting a GSM antenna (on the left);
SMA connector for GLONASS / GPS antenna connection (on the right).
On the side of the device unit (figure 2) is located:
MiniUSB connector for connection with a computer;
SIM card holder slot with ejector (yellow button).
In the upper part of the device unit (figure 3) there are three indicators:
system indicator (SYS)
modem operation indicator (GSM);
navigation receiver indicator (NAV).
Figure 1. Device unit (front view).
Figure 2. Device unit (side view).
Figure 3. Device unit (top view).

1.6 Standard equipment set
Tab. 2
№
Name
Number of pieces
Version of complete set
A
B
1
SIGNAL device unit
1
+
+
2
GLONASS/GPS-antenna
1
+
+
3
GSM-antenna
1
+
+
4
Fuse 1 А
2
+
+
5
Fuse holder
1
+
+
6
14-pin connector of Microfit-14 with two power wires
1
+
+
7
6-contact connector of Microfit-6 type
1
+
+
8
4-contact connector of Microfit-4 type
1
+
+
9
Cable set of 10 installation wires
1
+
+
10
Passport
1
+
+
11
Interface cable with MiniUSB connector
1
+
12
Package
1
+
Figure 4. GLONASS/GPS-antenna
Figure 5. GSM-antenna
Figure 6. Fuse and fuse holder

Figure 7. 14-pin connector of Microfit-14 type with power supply wires
Figure 8. 6-pin connector of Microfit-6 type
Figure 9. 4-pin connector of Microfit-4 type
Figure 10. Interface cable with MiniUSB connector
Some cases may require connection of additional equipment not included in the standard equipment set, for
example:
fuel level sensor;
tachograph;
external LED;
temperature sensor;
tangent G-2500
TouchMemory contact key reader.

Figure 11. Fuel level sensor
Figure 12. Tachograph
Figure 13. External LED
Figure 14. Temperature sensor

Figure 15. Tangent G-2500
Figure 16. TouchMemory contact key reader
The manufacturer reserves the right to complete the devices with equipment whose set, appearance and
characteristics differ from those shown in the pictures.

1.7. Device components
The device consists of the following elements (see Figure 17-20):
1) front cover;
2) GSM LED indicator;
3) system LED indicator;
4) GLONASS / GPS LED indicator;
5) GSM antenna connector;
6) GLONASS/GPS antenna connector;
7) fixing hole;
8) 4-pin connector;
9) 14 pin connector;
10) 6-pin connector;
11) MiniUSB connector;
12) SIM-card 1 ejector holder;
13) SIM-card holder 1 (external);
14) back cover;
15) fixing screw of the back cover - 4 pcs.
Figure 17
Figure 18

Figure 19
Figure 20

1.8 Device interface connector
4
2
3
1
14
7
13
6
12
5
11
4
10
3
9 8
2 1
6 5 4
3 2 1
SPK+
MIC+
UIN6
UIN5
UIN4
OUT4
OUT3
OUT2
OUT1
RS232 Tx
RS485A(+)
CAN H
SPK-
MIC-
Lout
UIN3
UIN2
UIN1
iBUT
GND
+Ug
RS232 Rx
RS485B(-)
CAN L
Figure 21. System connectors Microfit-14, Microfit-6, Microfit-4
Microfit-14 connector:
1 - Power “Plus” (+ UG)
2 –“Ground” (GND)
3 - 1-Wire Interface Line (iBUT)
4 - Universal input 1 (UIN1)
5 - Universal input 2 (UIN2)
6 - Universal input 3 (UIN3)
7 –Linear audio signal output of the “Autoinformer”function (LOUT).
8 –Output 1 "open collector" (OUT1)
9 –Output 2 "open collector" (OUT2)
10 - Output 3 "open collector" (OUT3)
11 - Output 4 "open collector" (OUT4)
12 - Universal input 4 (UIN4)
13 - Universal input 5 (UIN5)
14 - Universal input 6 (UIN6)
“Plus” of the main power supple +U6 should be connected via an external fuse.
“Ground” GND is connected to the "ground" of the car.
The universal inputs UIN1 - UIN6 can be set up as discrete, analog, counting or frequency. It allows to
connect to them a wide range of different sensors, for example, frequency (frequency from 1 Hz to 2000 Hz) and
analog (voltage from 0 V to 31 V) FLS, impulse fuel consumption sensors (DRL), buttons or switches.
Attention!
It is prohibited to apply a voltage more than 50 V to the device universal inputs, because it may lead to the
failure of the device.
Linear audio signal output LOUT is designed to connect a low-frequency amplifier with a minimum input
voltage of 0.5 - 0.7V to implement the "Autoinformer" function.
Attention!
To avoid interference, the GSM antenna of the device should be located as far as possible from the input
connector of the device, amplifier, speaker and from the wires connecting them.
Outputs OUT1-OUT4 «open collector» type are designed to control low-current loads up to 500 mA. When
activated, a negative signal ("Ground") is formed on these lines. Connection of external executive devices with a load
current higher than the maximum allowed should be made using additional switching relays. The relay type is selected
based on the requirements for the value of the switched current, voltage, and also depending on the power of the
connected device.
The interface line 1-Wire (iBUT) is used to connect the contact pads of TouchMemory keys, Proximity-card
readers and digital heat-sensing device.

Microfit-6 connector
1 - CAN interface line (CANL)
2 - RS-485 interface line (RS-485B (-))
3 - RS-232 Interface Line (RS-232RX)
4 - CAN interface line (CANL)
5 - RS-485 interface line (RS-485A (+))
6 - RS-232 Interface Line (RS-232TX)
The digital interface RS-232 is designed for a connection of various devices transmitting and receiving
information on this interface for example, a fuel level sensor, CAN bus adapter, tachographs, RFID, MODBUS devices,
etc.
The digital interface RS-485 is designed for connection of various devices transmitting and receiving
information on this interface, for example, fuel level sensors (up to 16 pcs.), CAN bus adapter, tachographs, RFID,
MODBUS devices, etc.
CAN interface is used for direct connection to CAN bus, tachograph or sensor.
Microfit-4 connector
1 - Microphone negative contact (MIC-)
2 - Negative speaker contact (SPK-)
3 - Microphone positive contact (MIC +)
4 - Positive contact of the speaker (SPK +)
Attention!
Observe the polarity when connecting the microphone.

2. DEVICE CONNECTION
2.1 Installation
Before the system installation, first of all, it is necessary to determine the type and number of the connecting
sensors, the identification system and other additional equipment. It is also necessary to be sure that all the additional
equipment connected to the terminal are operable.
Immediately before installing the system and connecting the equipment, also make sure that the cellular
operator provides good communication quality in the intended location of the GSM antenna.
The navigation antenna should be installed in such a way as to ensure maximum "visibility" of navigation
satellites in the upper hemisphere.
Attention!
In order to avoid overheating of the device and failure of the Li-Po battery, it is prohibited to install the tracker
in places with an ambient temperature more than +60 ° C, for example, near heating systems, etc. It is also
prohibited to place the device in a sealed container without heat dissipation.
It is prohibited to install tracker in places with high humidity and in places where there is a risk of possible
ingress of liquid or large amount of dust into the case.
When the device is connected to the Microfit-14 connectors harnesses, the connectors themselves should not
be connected to the device. Each pin of this connector has a numeric code. The purpose of each is shown in Figure
16
At the stage of checking the correctness of the connection and settings of the device, it is not recommended
to directly include actuating devices in the output circuits. It is advisable to do this at the final stage of verification.
The power supply of digital and analogue fuel sensors must be connected through the fuses supplied with the
sensors directly to the power supply.
The power supply “-” (“ground”) of all connected external sensors must be combined with the power supply
“-” (contact “G”) of the device.
The interface lines of fuel sensors should be connected directly to the device without additional elements.
Switches must be made with the power off.
Connection to the car CAN bus should be carried out with the car ignition off.
2.2 SIM-card installation and operation
The device supports using of two SIM-cards. The first SIM card (external) is the main by default, and its
installation is carried out without the use of special tools. For installation of the second SIM-card (internal), it is
necessary to remove the back panel of the device using a screwdriver.
After turning-on or rebooting, the device starts operation with the main SIM - card. In the settings, either an
external or internal SIM card can be selected as the main one.
Switching to the second SIM-card occurs when registration on the first SIM-card is lost and there is no
registration after the next GSM modem rebooting. Also switching to the second SIM-card occurs after a series of
unsuccessful attempts to connect to the telematics server. When operating on a secondary SIM-card, a periodic
availability check can be performed.
Figure 22. SIM-card installation to the device

Remove the SIM card holder from the device by pressing the yellow ejector button with a pen or a pencil.
Place the SIM card in the holder with the gold contacts facing out. Carefully insert the holder along with the SIM
card back into the device.
In order to install the second SIM card in the device, it is necessary to remove the back panel by unscrewing
the four mounting screws
Attention!
If the SIM-card is locked with a PIN code, it is necessary to unlock it by inserting the SIM card into a mobile
phone or specify the PIN-code of this card in the device settings in the “Data transmission” tab.
Figure 23. Removing the back panel of the device
The second slot is designed to install a nanoSIM type SIM-card. The SIM card is installed as shown in the
picture, by the contacts on the board.
Figure 24. SIM-card installing in the second slot
Assemble the device body in reverse order.
The balance of funds on SIM-cards should be sufficient for the device to operate on GPRS.