GD-02-DIN Universal GSM communicator and controller

GD-02-DIN Universal GSM communicator and controller
GD-02-DIN Universal GSM communicator and controller
The GD-02-DIN Universal GSM communicator and controller
remotely controls and monitors the status of various appliances.
Controlling can be performed using standard SMSes or by
dialling in. The device includes 2 controlled outputs (1 low and
1 high power), which can be set to status mode or impulse mode.
For monitoring the status of some process or equipment the
GD-02-DIN has 2 inputs which react to grounding. Input activation
and deactivation can be reported by an SMS with an option to be
called. One of those inputs has a pulse counter function (can be
connected to an electricity meter, water meter, gas meter and so
on). The current status of the counter can be signalled by SMS.
The device also has an input for connection of a GD-02T
thermometer to measure temperature and also work as a
thermostat with the possibility of switching and performing the setup
of an economical / comfort temperature remotely. The device has a
memory for up to 10 authorised telephone numbers. The built-in
backup battery ensures the power when the mains fails. The
product is designed to be mounted onto a DIN rail. Module
programming can be realized by GD-Link 2.1.0 software (or higher)
and a MicroUSB cable (supplied).
1. Using the GD-02-DIN
The GD-02-DIN offers the following operating modes:
CONTROL, activates / deactivates the output with an option to set
an impulse (1 s – 24 h). See chapter 5.1.
MONITORING, it follows the status of devices connected to inputs
IN1, IN2 (mains dropout, fault, etc.). See chapter 5.2.
TEMPERATURE MEASURING, using the GD-02T temperature
sensor the GD-02-DIN module measures the current temperature
and reports exceeding preset limits. This mode allows setting up
the reaction of the REL2 output when the temperature limits are
reached. See chapter 5.3.
THERMOSTAT, using the GD-02T temperature sensor the
GD-02-DIN module measures the current temperature and
according to the preset temperature (comfort / economical)
switches the power relay output REL1 (for instance electricity
heater, boiler, etc.). The comfort and economical temperature can
be set remotely by an SMS and you can also switch between them.
See chapter 5.4.
IMPULSE COUNTER, allows the GD-02-DIN module to be
connected to an external electric consumption meter equipped with
a pulse output (such as an electricity meter, gas meter or
hydrometer) and provides information about its current status
remotely. See chapter 5.5.
2. Device description
LED indicators description:
Green ON
Pod Skalkou 4567/33 | 46601 | Jablonec n. Nisou
Czech Republic |
Yellow ON
(green / yellow)
Yellow flashes
Green ON
GSM (green)
GSM network
Green flashes
IN1 (red)
Input 1
Red ON
REL1 (red)
Output relay 1
Red ON
Mains power (230 V) OK,
back-up battery OK
Mains power fault,
back-up battery OK
Mains power fault, back-up
battery LOW
(Low voltage status reported =
trouble status)
Module switched OFF or
discharged battery
GSM signal strength OK
(GSM signal level > 20%)
GSM signal strength is LOW
(GSM signal level < 20%)
GSM fault (No GSM signal)
Input in standby mode
Input active
Relay REL1 in standby mode
(Switched OFF)
Relay REL1 active
(Swithed ON)
Table 1: Status indication by the LED indicators
GD-02-DIN Universal GSM communicator and controller
Figure 1: 1 – Low voltage terminals; 2 – GSM antenna;
3 – LED indicators; 4 – MicroUSB connector for connection to PC;
5 – SIM card slot; 6 – Power and mains terminals.
Terminals description:
Low voltage terminals:
Input meant for connection of the GD-02T digital
temperature sensor. Other temperature sensors are not
supported. Mind the correct sensor polarity (red = TH+,
white = TH-). The measuring temperature range is from
-30 to +125 °C.
Common terminal for IN1, IN2 / REL2 and +5 V
Allows connection of any floating contact such as a button,
switch, relay contact, etc. It is connected between the IN1
and GND terminals. The input recognizes contact
activation and also deactivation. A maximum of 24 V DC
can be connected to this terminal.
IN2/REL2: Universal input / output terminal. The IN2 input terminal
has similar behaviour to input IN1. It allows connection of
impulse output of an electrical meter for example. The
REL2 is a semiconductor signal output with an open
collector (switches to GND) and is protected by a current
fuse of 100 mA with a maximum connected voltage of
24 V DC.
Power output 5V / 100 mA with protection against
shorting or overloading. This output has no backup
when the mains power fails. It serves for switching of
the external relay for example RB-524-DIN 250 V 16 A.
Power (high voltage) terminals:
NO, C, NC (REL1): Switching contact for power relay REL1 with
the parameters 230 V / 16 A. The relay has galvanically
separated contacts from the rest of the device and
complies with safety requirements for isolation of up to
4 kV. This output is not backed up when the mains
power fails. If the contact has been switched on, when
the mains fails, it switches off and after the mains
recovery the previous state can be restored (it depends
on the parameter on the “Setting” tab in the GD-Link
L, N:
Terminals for connecting the mains (230 V AC / 50 Hz)
If there is a requirement to install the GD-02-DIN controller in an
outdoor environment an installation housing with a high IP cover
index is needed.
The REL1 a REL2 outputs can be switched on independently for a
pre-defined time interval from 1 s to 24 hours (impulse). Both
outputs can have their own text instructions for activation and
For inputs IN1 and IN2 the time filter can be set from 0.1 s to
30 min in pre-set steps.
GD-02-DIN Universal GSM communicator and controller
3. Installation and initial setup
The device can only be connected to mains electricity by a person
who has an
qualification. Do not connect the protective earth
conductor. It is necessary to protect the module
externally according to the specification
mentioned in the Technical specifications
chapter. Do not forget to connect the GSM
antenna before you insert the SIM card (turn the device on)!
1. Attach the GD-02-DIN onto the required place on the DIN rail.
2. Connect the low voltage part (temperature sensor, inputs and
possibly the REL2 output) of the controller first.
3. Then connect the mains and the REL1 output.
4. Screw on the supplied GSM antenna. If the GSM signal strength at
the installation place is low (less than 40%), we recommend using
an external GSM antenna, for instance type AN-05.
5. By inserting the SIM card the module is turned on. When no SIM
card is inserted, and the device has no mains or internal backup
battery connected – nothing is indicated. When inserting the SIM
card (if the backup battery is not fully discharged) all LED indicators
flash briefly on the GD-02-DIN front panel and then the module
starts to indicate optically all the current statuses mentioned and
described in Table 1.
6. Connect the GD-02-DIN using the supplied MicroUSB cable to the
PC (max. USB cable length with extension can be 5 m).
7. Start the GD-Link software, see chapter 4.
8. Continue with chapter 5 according to the required operation mode.
For long-term reliable operation it is recommended to use tariffed
SIM cards. Avoid using pre-paid cards which may not work well
when credit balance is low but which also have uncertain SIM card
credit validity periods. If despite this warning you use a pre-paid
card, use the function for automatically checking the credit balance.
This will ensure the periodical checking of credit balance and if
credit is low the module sends you an SMS with a warning sent to
a pre-defined service number (this function must be supported by
your GSM operator).
Use any cell phone to check the SIM card is active by a phone call
or by sending an SMS.
To speed up logging onto the GSM network it is recommended to
disable the PIN code requirement. It can be realized by disabling
the PIN code requirement in the cell phone menu “PIN code
ON/OFF”. If it’s necessary to keep the SIM card protected by a PIN
code (preventing theft), enter a valid PIN code via the GD-Link
software (tab – “Setting” and “SIM card PIN”).
With no SIM card inserted, the device is out of order and it cannot
be used or configured by PC.
4. Configuration via the GD-Link SW
To configure the GD-02-DIN module by computer use
GD-Link software. It serves for reading and changing the device
settings locally connected by USB cable.
The software is free for download from our website, Downloads / Software section.
Follow the instructions of the installation wizard to install the
software successfully. When the installation is done the PC creates
a shortcut for the GD-Link software.
The software requires OS Windows XP or newer.
It is recommended workplace with letters size up to 120 dpi
(standard is 96 dpi).
The software also serves for FW update performance. During
online Internet access the GD-Link SW checks if the FW is really
current and if it detects that a new FW version has been released,
the user is informed and it offers downloading. This file can be used
to perform an FW update by clicking the option “Device / Upgrade
Note: there is an option for checking the current SW version’s
availability and it is possible to enable / disable this in the SW menu
GD-Link / Automatic update.
Outputs – Serves for setting parameters related to outputs, texts for
control and for reporting switching ON / OFF the outputs. To perform a
test use the “TEST” button. If the output is pre-set to a Special function
(for example Thermostat), its setting is inaccessible (all settings can be
performed on the selected tab).
Thermometer – Serves for the activation and setup of the temperature
monitoring function. Sets up temperature limits, texts send as an SMS
report, etc.
Thermostat – Serves for the activation and sets up the Thermostat
function (temperatures, SMS commands to control REL1 output, etc..).
Consumption meter – Serves for the activation and set-up of the
Consumption meter function (units of a measured utility, the number of
pulses equal to one unit and the default counter state). It also shows
the history of measured values.
Setting – Serves for general settings such as the password for access
to the SW and GSM dialler, SIM card PIN code, max. daily SMS limit or
credit balance checking.
Information – Serves to check the device’s important information
(Reg-Key and production code), current status of inputs, outputs,
temperatures, impulse counter status, number of sent SMSes, credit on
a pre-paid SIM card and GSM data.
Note: The tooltips give you a quick description of programming options.
Move the mouse cursor over the parameter which you want to have
described and the software displays a description.
5. Operation modes
The GD-02-DIN offers the following operating modes:
This operational mode allows you to control the REL1 power
output independently to the REL2 signal output by a pre-defined
SMS text or by dialling in. One more option is using a bridge
between IN1 triggering and REL1. Up to 10 telephone numbers can
be stored in the device to control both outputs independently.
When a password is used outputs can be controlled by any
telephone number not just by the numbers stored in the
Set-up description:
To apply this mode start the GD-Link software and in the
„Users“ tab enter the required telephone numbers in the
„Output control by dialling in / SMS“ column and give them
authorisation to control outputs by SMS or by just dialling in.
The telephone numbers are required to be in international
In the “Outputs” tab you can set “SMS commands to control the
switching ON/OFF” of the both REL outputs or the “way of
switching” (ON/OFF or Impulse) and also the SMS text by
which control is confirmed to the person who is in control.
The current status of outputs is indicated here.
On the „Setting“ tab by the „Output status after power recovery“
parameter (outputs switched OFF or last known status) output
properties can be set for when a mains dropout occurs and
then recovers.
Example: Gate control by dialling in from up to 10 users.
The application requires a contact to be connected to the REL2
output / GND and to the low voltage input of a controlled gate
(Figure 2).
Using the GD-Link software it is necessary to set the telephone
numbers authorised to control the “REL2” output and also to
check (tick) the option by „Output control by dialling in“ on the
„Users“ tab.
The GD-Link SW includes eight tabs:
Users – Setup for user telephone numbers, authorisation to control
outputs and report assignment
Inputs – Serves for setting parameters related to inputs,
activation / deactivation texts to be reported. If the input is pre-set to a
Special function (for example Consumption meter), its setting is
inaccessible (all settings can be performed on the selected tab).
GD-02-DIN Universal GSM communicator and controller
GD-02-DIN Universal GSM communicator and controller
Figure 2: GD-02-DIN as a barrier controller.
Pod Skalkou 4567/33 | 46601 | Jablonec n. Nisou
Czech Republic |
This mode serves for monitoring the status of up to two devices using
the IN1 / IN2 inputs. The inputs react to connection / disconnection
to / from the GND terminal. If the monitored device is equipped with for
example a Fault output then it can be connected with the GD-02-DIN
and reported by SMS and also dialling in. Up to 10 telephone numbers
can be stored in the device and the information reported by an SMS
and also by dialling in.
Figure 3: Monitoring of the maximum water level in a tank with
automatic water draining using a water pump.
Set-up description:
Go to the GD-Link software at the „Users“ tab and store the
required telephone numbers. For the chosen numbers select in the
columns „SMS report activation / deactivation” and “Dial in…” the
type of reported information (SMS, dialling in or a combination of
At the „Inputs“ tab you can edit texts assigned to inputs IN1 / IN2
which are sent by an SMS when the inputs are
activated / deactivated.
When no activation / deactivation texts have been preset then no
SMS and no call will be performed.
Each input has an activation delay (0.1 s – 30 min) in pre-set steps.
The delay can be used for installation where short pulses have to
be eliminated (for example an SMS is sent if the activation of an
input takes more than 60 s, input deactivation takes 1 s always).
The IN1 input can be inverted, check (tick) the option „Input
inversion“, see the „Inputs“ tab. The input is activated when
connected to GND – this is standard behaviour. When an input is
inverted, the input reacts oppositely (disconnection from GND is
Sent SMSes are counted by a daily counter and if it reaches the
daily limit it can be blocked by the parameter „Activate daily SMS
limit“ on the „Setting“ tab. When the limit is reached and blocked it
can be unblocked by the SMS command „SMS RESET“.
Unblocking and simultaneous counter resetting is performed
automatically at midnight (at 00:00 hrs).
The IN1 input can be linked to REL1, by the enabled option
„Activation of the input will switch REL1 ON“.
The current status of all inputs is visible at this tab in column
„Current status“.
Thanks to the GD-02T sensor the temperature can be measured in
the required place and crossing the lower and upper limit reported by
Set-up description:
Mind the correct polarity when the digital thermo sensor is
connected (red wire =TH+, white wire =TH-). See figure 4.
Using the GD-Link software at the „Thermometer“ tab enable
function “Temperature monitoring”.
An SMS report about reaching the temperature limit (upper / lower)
is realized by an activation / deactivation of the IN2 input. So it is
necessary to enable the parameter „Users / SMS report
activation/deactivation / IN2“.
On the „Thermometer“ tab set the required values by the
parameters „Upper temperature limit“ and „Lower temperature
limit“. Temperature setup range from -30 to +125 °C.
For monitoring limits a fixed hysteresis +0 / -3°C is defined
(tolerance because of thermal fluctuations).
Caution: The lower temperature limit has to be set lower than the
upper temperature limit by at least 3 °C (because of the
An SMS report about temperature out of the selected range can
also be sent in a service SMS. For reporting it is necessary to
program the required telephone numbers via the GD-Link software
on the „Users“ tab into the „Phone number“ column. Check the
option in the column „Service SMS“ and then on the
„Thermometer“ tab in the „SMS report to service phone numbers“
settings reporting of the „Exceeding upper / lower temperature
Example: Monitoring of the maximum level of a tank, including
automatically water pumping.
This diagram shows the connection of the level sensor to the IN1
and GND inputs. REL1’s power output switches 230 V to power the
water pump, see Figure 3.
For REL1 to be switched ON automatically based on IN1 input
triggering it is necessary to enable the parameter „ Activation of the
input will switch REL1 ON“. This ensures the water level triggers
the level sensor and the water pump reduces the water level until
the level sensor detects a water level reduction.
To eliminate switching ON the water pump very often we
recommend an appropriate delay for an input activation.
The IN2 input can be used for connection of a second level sensor
which serves for reporting a malfunction (tank overload or empty
Figure 4: Measuring the temperature
R – red wire; W – white wire
GD-02-DIN Universal GSM communicator and controller
GD-02-DIN Universal GSM communicator and controller
To apply this mode, connect a GD-02T digital thermometer sensor.
The mode allows controlled switching of the heater by the REL1 output
to regulate the temperature in the premises. Pre-set the comfort and
economical temperatures. The user can switch between these two
temperatures by an SMS command or by dialling in. Both temperatures
can be changed by a PC connected locally or remotely using
programming SMSes.
Example: Monitoring of electric energy consumption.
Set-up description:
Mind the correct polarity when the digital thermo sensor is
connected (red wire =TH+, white wire =TH-).
A controlled device has to be connected via the REL1 (see Figure
5) power output contacts in this mode.
Warning: pay attention to the maximum switching load of the
REL1 output (230V/16A resistive load).
Using the GD-Link software on the “Thermostat” tab enable the
function “Activate thermostat (REL1) mode”. Set the “Comfort (TC)
and Economical (TE) temperatures”. For the Thermostat mode
„Hysteresis“ can be set for regulation within a 0.1 – 9°C limit
(tolerance because of thermal fluctuations).
For the Thermostat mode SMS commands can be modified for
switching between the Comfort and Economical temperature
(„SMS command for activation Comfort/Economical temperature“).
Switching between Comfort and Economical temperature is also
possible by just dialling in from authorised telephone numbers
preset for REL1 control.
This mode requires connection between the impulse output and a
secondary electricity meter using terminals IN2 and GND on
the GD-02-DIN (see Figure 6). The electricity meter can be singlephase or three-phase.
In the GD-Link software on the „Consumption meter“ tab enable
the function „Consumption meter mode“ and pre-set the default
values for counting (counter status, number of pulses for one unit
and the measuring unit).
Figure 6: Electricity meter mode
6. Control
Figure 5: Measuring the temperature and electric heater control.
R - red wire; W – white wire
The GD-02-DIN communicator can be controlled by SMS commands
or by dialling in.
To be controlled by SMS commands and for SMS reporting of the
command confirmation pre-set the authorisation for the specific
telephone numbers. Then fill in the texts for every input and output.
To be controlled by dialling in (ON / OFF / timer or change
thermostat mode) on the “Users” tab set the „output control by
dialling“ (in the case of thermostat control it is necessary to set
dialling in for REL1) at the required telephone number positions.
When the “Password” is set on the „Setting“ tab it allows you to
control the GD-02-DIN outputs from non-stored telephone numbers
(only SMS commands). If control is performed from stored
numbers only, then the password can be disabled completely
(protection against abuse is by identification of it´s own telephone
7. Control, set-up and configuration by SMS
The device checks every incoming SMS and if the SMS includes
a valid command with a valid format it reacts to it. A correct control
command format has to be:
This mode allows management of the consumption of various utilities
such as electrical energy, water, gas, etc… connecting to the impulse
output of the slave (supplementary) electricity meter, hydrogen meter,
gasometer or any other measuring instruments with an impulse output.
Caution: If you want to use a measuring instrument / appliance
owned by the third party provider (for example an electricity meter on
the main switchboard box) you have to contact them and make an
arrangement related to the way of connection to the pulse output of the
measuring instrument. This output is typically protected by a seal and
requires removing to be accessed. A utility company usually requires
the connection of some additional protection according to their
guidelines (galvanical isolation, etc.). If possible a much better and
cheaper solution is to install a secondary measuring instrument with an
impulse contact connected to the GD-02-DIN.
a valid access password (factory default 1234), can
be modified on the „Settings“ tab or by a
programming SMS with the „PSWD“ parameter, see
table of programming SMS instructions.
Command: a fixed command or pre-set control text, see the table
of programming SMS instructions.
Set-up description:
The GD-Link software in the „Consumption meter“ tab enables the
function „Activate consumption meter mode“.
Also sets the default counter state, pulses per unit and unit type, for
example kWh or m³.
By an SMS request „[PASSWORD] CNT“ check the current
counter status.
You can also use the automatic SMS function, the current impulse
counter status is included. Go to the „Users“ tab and check the
option „Automatic SMS“ and on the „Setting“ tab enable function
“Automatic SMS”, then enter the period and time when it is to be
GD-02-DIN Universal GSM communicator and controller
Password command
(password space command)
General rules of SMS command use are as follows:
An SMS always includes “Password and command”
The password requirement for commands can be disabled in the
GSM communicator settings (“Settings / Use password for: SMS
control”). If the requirement is enabled it is valid for all numbers.
When the password requirement is disabled, the GD-02-DIN can
only be controlled from stored telephone numbers; the password is
not present in the SMSes.
There is always a space between the password and the command
and its value.
A programming SMS which changes the device settings and also
changes the password always requires entering the current
password. For changes of other parameters a password is only
required when password requirement is enabled.
Capital and small letters are treated equally.
We recommend using texts with no diacritics.
GD-02-DIN Universal GSM communicator and controller
Confirmation of a performed SMS command is only sent to the
telephone number from which the command has been sent.
If the GSM unit receives an SMS with a command syntax error or
an SMS is not recognized, then the parameter „Forward
incomprehensible SMS“ ensures its forwarding with the senders
telephone number to the service telephone number with the
enabled parameter „Service SMS“. If the command has been sent
from an unauthorised telephone number, the device answers that
the command could not be performed.
Example: 1234 TC 25
Example: 1234 TE 06
Mode: Impulse counter chapter 5.5
Note: * = These SMS commands always require entering the
password even if the password requirement is disabled.
Device status request
Example of a STATUS SMS request:
Example: 1234 STATUS
Device information request
Example: 1234 DINFO
Password change
Example: 1234 PSWD 4321
changes password from 1234 to
Disabling password for
authorised telephone numbers
Example: 1234 PSWD OFF
Enabling password for all
telephone numbers
Example: 1234 PSWD ON
Mode: Controlling chapter 5.1
[PASSWORD] [Text for REL1
output switching ON]
REL1 output switching ON
[PASSWORD] [Text for REL1
output switching OFF]
REL1 output switching OFF
[PASSWORD] [Text for REL2
output switching ON]
REL2 output switching ON
[PASSWORD] [Text for REL2
switching OFF]
REL2 output switching OFF
Example: 1234 ON1
Example: 1234 OFF1
Example: 1234 ON2
Example: 1234 OFF2
Pod Skalkou 4567/33 | 46601 | Jablonec n. Nisou
Czech Republic |
Mode: Monitoring chapter 5.2
Reset of reached SMS sending
Example: 1234 SMS RESET
Mode: Temperature measuring chapter 5.3
Current temperature requirement
Example: 1234 TMP
Upper temperature limit
Example: 1234 ATH 30
Lower temperature limit
Example: 1234 ATL 05
Mode: Thermostat chapter 5.4
[PASSWORD] [Text for
Comfort temperature:]
[PASSWORD] [Text for
Economical temperature:]
Impulse counter reset to default
Example: 1234 CNT 123456.789
Example: 1234 HELP
Programming SMS commands
[new PASSWORD] *
Example: 1234 CNT
System SMS commands
Basic information
with an available SMS command
Current counter status request
Table of programming SMS instructions:
Economical temperature setup
GD-02-DIN reports:
GSM signal:
AC power:
Input IN1:
Input IN2:
Output REL1: ON
Output REL2: OFF
Temperature: 20.5°C
124 kWh
(GSM signal strength)
(status of AC power)
(status of backup battery capacity)
(status of sent SMS counter)
(status of input 1, active / inactive)
(status of input 2, active / inactive)
(status of output 1, ON / OFF)
(status of output 2, ON / OFF)
(current temperature-measured)
(thermostat mode Eco / Comfort)
(preset Comfort temperature)
(preset Economical temperature)
(preset low temperature limit)
(preset high temperature limit)
(status of an impulse counter)
(time when SMS has been sent)
(date when SMS has been sent)
8. Technical specifications
Internal backup battery
Backup time
GSM module bands
230 V AC / 50 Hz, protection class II.
average standby 0.5 W
(1.2 W relay switched on)
1 A; type A
Polymer Lithium-ion 300 mAh
3 hours
GSM/GPRS Quad Band
850 / 900 / 1800 / 1900 MHz
Relay 1 contact load:
Maximum switching voltage
Resistive load (cosij Inductive, capacitive load (cosij .4)
Minimum switching DC power
250 V AC; 24 V DC
max. 16 A
max. 8 A
10 mA; 5 V DC
The relay has galvanically separated contacts from the rest of the
device and complies with safety requirements for isolation of up
to 4 kV.
TH inputs for digital thermometer (GD-02T)
range -30 to +125 °C
(max. cable length 3 m)
Input IN1
Input is actived when connected to GND, max. 24 V
Universal input/output IN2/REL2
Input is actived when connected to GND, max. 24 V
Input is compatible with impulse output of Class B electricity meters
according to the EN 62053-31
Output switches to GND, output protection 100 mA, max. voltage 24 V
Auxiliary power output
+5 V DC / max.100 mA, no backup
Operational temperature range
-20 °C to +50 °C
IP covering
front panel IP20
Dimensions (no antenna)
90 x 36 x 58 mm
EN 60950-1
EN 301 489-7, EN 55022 and EN 61000-6-3
Radio transmissions
ETSI EN 301 511
Current temperature requirement
JABLOTRON ALARMS a.s. hereby declares that the GD-02-DIN is in
a compliance with the relevant Union harmonisation legislation: Directives
No: 2014/53/EU, 2014/35/EU, 2014/30/EU, 2011/65/EU. The original of
the conformity assessment can be found at - Section
Example: 1234 TMP
Switching to comfort temperature
Example: 1234 COMFORT
Note: Although this product does not contain any harmful materials we
suggest you return the product to the dealer or directly to the producer
after use.
Switching to economical
Example: 1234 ECO
Comfort temperature setup
GD-02-DIN Universal GSM communicator and controller
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF